Skip to content

Mapping

Meet others in your local area interested in Maps and/or Mapping. Make new friends!
pin icon
44,167
members
people1 icon
55
groups

Frequently Asked Questions

Yes! Check out mapping events happening today here. These are in-person gatherings where you can meet fellow enthusiasts and participate in activities right now.

Discover all the mapping events taking place this week here. Plan ahead and join exciting meetups throughout the week.

Absolutely! Find mapping events near your location here. Connect with your local community and discover events within your area.

Mapping Events Today

Join in-person Mapping events happening right now

Coffee and Brunch at Caboose Commons (Mosaic in VA)
Coffee and Brunch at Caboose Commons (Mosaic in VA)
We'll check out Caboose Commons: 2918 Eskridge Rd, Fairfax, VA 22031 This location is 15 min. walk to Dunn Loring metro station. And there are public parkings at Mosaic. Please have a picture profile so we can recognize you in the meetup. Please only sign up if you're sure about attending this meetup, and please update your RSVP as soon as possible if you need to cancel, thank you!
Journey to the Centre of the Earth - Discussion
Journey to the Centre of the Earth - Discussion
This is our final discussion of **Jules Verne’s** timeless adventure, **Journey to the Centre of the Earth.** We'll be discussing chapters 31 to the end of the book. We always keep a relaxed pace of about 70–100 pages per week so there is plenty of time to enjoy the story before we gather over coffee, tea, or wine to discuss. **Location:** Busboys and Poets, 235 Carroll Avenue, Takoma Park **Metro:** Just 1 block from Takoma Station on the Redline **RSVP Deadline:** Thursday, July 2 (so we can give the venue an accurate headcount) Logistics for the Meetup **Venue courtesy:** Please start a tab at the bar for any food or refreshments. We kindly ask that everyone purchase at least one beverage (coffee, smoothie, wine, etc.) to thank our hosts for providing the meeting space. **The Book Edition:** Warning: Because there are many heavily altered translations of this book, we highly recommend purchasing the Oxford World's Classics edition. It features the complete 45 chapters so we can all stay on the same page! You can order the book from our host Busboys and Poets [at this link.](https://bookshop.org/p/books/the-extraordinary-journeys-journey-to-the-centre-of-the-earth-jules-verne/1aafdcac17641bfe?ean=9780199538072&next=t) Or you can order from Amazon [at this link](https://www.amazon.com/Journey-Centre-Oxford-Worlds-Classics/dp/0199538077). RSVP to reserve your spot, and feel free to ask questions. Your RSVP helps our host plan for space to accommodate everyone. Can't wait to read with you! [![Google map of the user's next upcoming event's location](https://maps-googleapis.meetup.com/maps/api/staticmap?center=38.974945%2C+-77.015358&zoom=15&size=620x160&format=png&scale=1&key=AIzaSyBhcQiQISkjMBwLAugJj8V78nMPfitnr44&markers=color%3A0xF65858%7C38.974945%2C+-77.015358)](https://www.google.com/maps/search/?api=1&query=38.974945%2C%20-77.015358) Busboys & Poets 235 Carroll St NW · Washington, DC ##
Walking Tour: Frederick Douglass in Old Anacostia with John Muller!
Walking Tour: Frederick Douglass in Old Anacostia with John Muller!
You are invited to join my good friend **John Muller** for an in-person guided walking tour – **Frederick Douglass in Old Anacostia**. Please note that this is a paid program, which requires purchasing a ticket via the Eventbrite link below. [https://www.eventbrite.com/e/walking-tour-the-lost-history-of-frederick-douglass-in-old-anacostia-tickets-1462462858779#organizer-card](https://www.eventbrite.com/e/walking-tour-the-lost-history-of-frederick-douglass-in-old-anacostia-tickets-1462462858779#organizer-card) Learn about the localized history of Frederick Douglass in Old Anacostia and Barry Farm for the last quarter-century of his life. Developed in the mid-19th century as one of the District’s first suburbs, Anacostia and its residents played a key role in shaping the city we know today. A walking tour led by historian and author John Muller traces its history and significance with a focus on the man that came to be known as the “Lion of Anacostia,” Frederick Douglass, who lived in the neighborhood from 1877 until his death in 1895. Blending historic research and contemporary neighborhood affairs and news, our guide will lead the group on a walk through time, exploring one of Washington City's most misunderstood and sacred communities. Stories of presidents, local personalities, famed resident Frederick Douglass, 19th-century architecture and neighborhood folklore will be woven throughout. Questions and photography are encouraged throughout the walking tour! *** **John Muller, author of Frederick Douglass in Washington, D.C.: The Lion of Anacostia (2012)** and Mark Twain in Washington, D.C.: The Adventures of a Capital Correspondent (2013), has presented widely throughout the DC-Baltimore metropolitan area at venues including the Library of Congress, Enoch Pratt Library, DC Public Library, Frederick Douglass National Historic Site and local universities. Muller is a frequent guest on Washington, D.C. radio stations and has been cited by the Washington Post, Washington City Paper, Star Democrat, Salisbury Independent and other publications for his local history research and subject matter expertise. He has been featured on C-SPAN’s BookTV and C-SPAN’s American History TV, broadcast airwaves of NBC4 (Washington), WDVM (Hagerstown) and radio stations WPFW (DC), WAMU (DC), WYPR (Baltimore), WEAA (Baltimore), Delmarva Public Radio (Eastern Shore) and West Virginia Public Broadcasting. For the past decade Muller has contributed hundreds of articles to local and national print and online news sources, including the Washington Informer. *** This is a private walking tour of the Anacostia neighborhood conducted by an authorized local historian. Meet at the visitor’s center of the Frederick Douglass National Historic Site 1411 W Street SE. Wear walking shoes, total travel is 1.5 miles. Parts of the tour are not accessible for people with mobility issues. Tour is not ADA accessible. Family & pet friendly. Metro: Anacostia (Green Line) / 92 Bus, V2, B2 Please note that this is a paid program, which requires purchasing a ticket via the Eventbrite link below. [https://www.eventbrite.com/e/walking-tour-the-lost-history-of-frederick-douglass-in-old-anacostia-tickets-1462462858779#organizer-card](https://www.eventbrite.com/e/walking-tour-the-lost-history-of-frederick-douglass-in-old-anacostia-tickets-1462462858779#organizer-card)
DC Pros Happy Hour
DC Pros Happy Hour
Event is 21+ http://photos1.meetupstatic.com/photos/event/a/1/d/1/600_443321425.jpeg
Ladies DC Art Walk
Ladies DC Art Walk
This Art Walk is a monthly evening dedicated to creativity, connection, and community. Stroll through local galleries and studios, meet artists, enjoy rotating exhibitions, live art, and immersive experiences all while supporting the local arts scene. Come curious, stay inspired. Event details will be in the Ladies Group in WhatsApp. Join here: https://chat.whatsapp.com/H533SlZi8h70XjkN6iSEws?mode=gi_t If you’re having difficulty joining, please send me a direct message.
49 cent dress
49 cent dress
**One of our favorite bands in playing this Friday. Tell them at the gate you are there for the band and they will direct you to the terrace bistro.** **The concert is inside and air conditioned!!!!**
Special 250th Independence Week Tour! Thomas Jefferson’s Wild Life & Times, D.C.
Special 250th Independence Week Tour! Thomas Jefferson’s Wild Life & Times, D.C.
Special 250th Independence Day Tour! Thomas Jefferson’s Wild Life & Times, Washington D.C. Friday, July 3, 2026, starting from the Willard Hotel! Held in and around the White House’s Lafayette Square, on the 250th anniversary weekend of Independence Day, this tour will examine the accomplishments of, and many crises faced, by Jefferson—D.C.’s first two-term President--during the American Revolution, in Europe, and during his eventful stay in the then-new Executive Mansion. And of his colleagues & rivals Alexander Hamilton, George Mason, Benjamin Banneker, James Madison, Aaron Burr, George Washington, & John Adams, and others, all of whom left a significant mark on the capital, and America, from the first July 4th and thereafter. Friday, July 3, 5:45 pm. MEET in the lobby of the Willard Hotel 1401 Pennsylvania Ave NW, Washington, DC 20004 Length: 2 hours. Nearest metros: Length: Farragut North or Farragut West Lafayette Square next to the White House has dozens of sites related to the American Revolution, Thomas Jefferson, Alexandria Hamilton, et al. Discover: • A traitor’s attempted overthrow of Jefferson’s Lewis & Clark expedition • The man who reconciled Hamilton and Jefferson • The other Jefferson memorial--outside the White House • George Mason’s battle against—the U.S. Constitution • The Marquis de Lafayette’s amazing & perilous associations with multiple American Presidents • Inventor of farm, kitchen, and spy apparatus • The secret language of the Jefferson Memorial • The undeclared naval war, and declared trade war, that nearly wrecked Jefferson’s second term • Sally Hemings and Maria Cosway • Disputes over the Jefferson Memorial • Rollercoaster relationship with John Adams • “The room where it happened” • The “miracle mansion” of TJ’s militia chief • The scoundrel who betrayed Jefferson, killed Hamilton, and tried setting up his own country—with the head of the U.S. Army! • Architect-in-Chief: Did TJ secretly design the White House? • When Jefferson was almost hanged • How Mason & Jefferson ended the slave trade—from Minnesota to the Mediterranean! • President Jefferson’s “First Lady” • Did Jefferson plagiarize Mason? • How TJ came to write the Declaration of Independence, and its hidden coda • And more! Pre-Register and Pre-Pay via-- Eventbrite, at: https://www.eventbrite.com/e/special-250th-independence-day-tour-thomas-jeffersons-wild-life-times-dc-tickets-1602841434879?aff=oddtdtcreator Or PayPal, sending $26 to paypal.me/EMoser460 Or pay $25 in cash at the start of the tour. We’re highly rated on TripAdvisor: https://www.tripadvisor.com/Attraction_Review-g28970-d12791843-Reviews-Lafayette_Square_Tour_of_Scandal_Assassination_Intrigue-Washington_DC_District_of.html Your tour guide is a former speechwriter to the President of the United States, a former writer for Jay Leno’s “The Tonight Show”, & author of the newly published spy novel, set in Georgetown, Femme Fatalité: https://www.amazon.com/Femme-Fatalité-Lizzy-Thorne-Novel-ebook/dp/B0F4945MR5 Also the hidden history of Lafayette Square—The White House’s Unruly Neighborhood!: https://www.amazon.com/White-Houses-Unruly-Neighborhood-Lafayette-ebook/dp/B082ZVDCD7/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr= And: https://www.amazon.com/Patriots-America-Things-American-Should-ebook/dp/B076MR3XS3/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr= And, The Lost History of the Capitol-- https://www.amazon.com/Lost-History-Capitol-Tumultuous-Congress-ebook/dp/B099JBSN9Q/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr= Questions?: [191.EP.JM.56@proton.me](mailto:191.EP.JM.56@proton.me) Bring your walking shoes, and perhaps water and sunscreen. Kick off this special Independence Day weekend with this unique tour! Think history is boring? Not on our tours!

Mapping Events This Week

Discover what is happening in the next few days

Beginner(+) Level: Washington Monument Illumination - 250th Anniversary
Beginner(+) Level: Washington Monument Illumination - 250th Anniversary
Semper Gumby Ride as I'll be winging it when we get to the Mall. **+++++++++++++++++++++** **The Ride: Summary** **(Must Read)** **+++++++++++++++++++++** *RIDE NAME: Washington Monument Illumination - 250th Anniversary - START LOC: Washington Sailing Marina *START GPS: [https://goo.gl/maps/uGpBoTzjAS8aNDuf8](https://goo.gl/maps/uGpBoTzjAS8aNDuf8) - START PARKING: Main parking lot by the restrooms. *ARRIVAL: 8:30pm - SPEECH: 8:45pm *ROLLING: As soon as the speech is done. - SUNSET: 8:38pm *LEVEL: Beginner(+) Night Ride - DISTANCE: 12.5 miles *PACE: 12-14 mph (casual pace) - TERRAIN: Trail / Street / Bike Lane *RIDEWITHGPS ROUTE: TBD **NOTE:** - 100 Lumen (or Greater) Front Light (Read all about them here: [https://www.meetup.com/novacbg/events/273787949](https://www.meetup.com/novacbg/events/273787949)) *Red Tail Light - Verify they all have a fresh charge *We will try to keep our bikes with us at the Mall (if you have a convenient bike lock please bring it just in case). **+++++++++++++++++++++** **The Ride : Detail** **+++++++++++++++++++++** For your pleasure NoVA CBG presents .... the Washington Monument Illumination - 250th Anniversary. - **Showtime:** The 18-minute presentation plays on a loop. ***Visuals:** The projection illuminates all four sides of the monument, showcasing the people, places, moments, and ideals that have shaped the nation. ***The Grand Finale: **Each presentation concludes with the entire monument glowing brilliantly like a massive birthday candle. Basic 'unknown' plan. We will ride our bikes from the Washington Sailing Marina to the Mall. My goal is to be in front of the Smithsonian Castle (in some form or fashion). The projection is on an 18 minute loop and begins at 9pm... depending on what time we get there we will hang our for a full loop before heading back home. **+++++++++++++++++++++** **The Meeting Spot:** **+++++++++++++++++++++** Washington Sailing Marina 1 Marina Dr. Alexandria, VA GPS: [https://goo.gl/maps/uGpBoTzjAS8aNDuf8](https://goo.gl/maps/uGpBoTzjAS8aNDuf8) Parking: You can park in the main lot by the restrooms
From Glen Echo's Charm to the Majestic Great Falls with E-bike Lovers
From Glen Echo's Charm to the Majestic Great Falls with E-bike Lovers
[https://ridewithgps.com/routes/45899232](https://ridewithgps.com/routes/45899232) 26.1 miles. Lunch is at the Great Falls overlook 18.2 miles into the ride. There are toilets at Great Falls and Fletchers' Boathouse. We will e-bike from Glen Echo Park in Maryland to the majestic Great Falls. We will be biking on the Capital Crescent Trail, the C&O Canal pathway, and McArthur Blvd with separate biking lanes. This tour captures the essence of adventure and natural beauty. We will be meandering alongside the serene Potomac River and the C&O Canal, offering E-bike Lovers an unparalleled opportunity to immerse themselves in the lush landscapes that define this region. Glen Echo Park, with its rich tapestry of cultural and artistic heritage, serves as the perfect prologue to a journey that gradually unfolds into the wild, untamed beauty of the Great Falls. The route is just over 26 miles on gravel and asphalt. The gravel is compact. If you don't like the gravel on the C&O Canal pathway, this is not your route. Entrance to the Great Falls National Park is for free as we enter from the C&O Canal. We park at the large parking lot off Oxford Street, NOT at the smaller lot at McArthur Blvd. Please bring snacks, lunch and plenty of water. FYI: Ride With GPS E-bike Lovers Club membership is now for free as [www.ebikelovers.com](http://www.ebikelovers.com/) generates sufficient income from ads to cover the costs. Here is the link to activate your free membership: [https://ridewithgps.com/auto_approve/Club/6746/Zwa5jhttF5mJrFbN](https://ridewithgps.com/auto_approve/Club/6746/Zwa5jhttF5mJrFbN) The group stops a few times for slower riders to catch up. **REMEMBER:** This is a self-guided event. This event empowers each participant to take the lead, as there are no designated bike leaders within E-bike Lovers. We all embrace the role of leaders in this self-guided experience. Please RSVP only if you are coming so we know how many E-bike Lovers will participate. We enjoy a nearly 100% RSVP success rate. Thank you so much for your help! As usual, non-assisted bikers are most welcome. DISCLAIMER LIMITATION OF LIABILITY: TO THE FULLEST EXTENT PERMISSIBLE PURSUANT TO APPLICABLE LAW, NEITHER GREGORY MAASSEN, NATHAN MERRIS, RICHARD CAMER TRIP COORDINATORS, THEIR AFFILIATES, FAMILY AND FORMER AND CURRENT EMPLOYERS NOR ANY OTHER PARTY INVOLVED IN CREATING, PRODUCING, OR DELIVERING E-BIKE LOVERS GUIDES, OUR MEETUP EVENTS, AND THE GPS E-TRAILS IS LIABLE FOR ANY DIRECT, INCIDENTAL, CONSEQUENTIAL, INDIRECT, EXEMPLARY, OR PUNITIVE DAMAGES ARISING OUT OF A USER’S ACCESS TO, OR USE OF THE E-BIKE LOVERS GUIDES, OUR MEETUP EVENTS, AND THE GPS E-TRAILS. See for the full disclaimer: https://ebikelovers.com/disclaimer
LM: Signal Knob Fireworks Trip (14 miles)
LM: Signal Knob Fireworks Trip (14 miles)
Let's go backpacking and check out the Independence Day fireworks from Signal Knob Overlook. I anticipate that we'll be able to see the fireworks going off over [Strasburg](https://www.strasburgva.com/home-page/page/july-4th) and [Middletown](https://visitwinchesterva.com/event/middletown-4th-of-july-parade-and-fireworks/) (maybe others?). Splits are 9.6/4.1 miles. Here's the route I'm thinking: [https://caltopo.com/m/GMUJN1L](https://caltopo.com/m/GMUJN1L) **Saturday July 4** * We'll meet up at Vienna Metro around 8:30am. * Drive from Vienna to the Signal Knob Trailhead parking (Sheetz stop planned in Gainesville) ([Google maps](https://maps.app.goo.gl/RBD48x7Rgoh5NjUb7)) * Anticipate we'll be at the Signal Knob trailhead parking lot around 10:30 am. * Take the trail West and loop back around to a campground near signal knob. (**Note**: that it will be a dry camp on the ridge during a hot and humid weekend, so plan to bring lots and lots of water.) * We should have a lot of down time at camp or at the overlook, so I'm planning to bring an UNO deck, camping chair, book, beverages, etc. * We'll watch the fireworks displays from Signal Knob Overlook. **Sunday July 5** * Hike back to the cars (\~4 miles) * Grab breakfast or brunch on the way back to DC **If you are an "applicant" (meaning that this is your first DCUL trip), please send me your gear list ASAP.** For an explanation of DC DUL membership ranks: https://dculbackpacking.com/about/membership/ DCULers have maps! Here are a few map resources: * PATC Map G ([https://shop.patc.net/products/map-g-massanutten-mt-north-half?variant=47655962575066](https://shop.patc.net/products/map-g-massanutten-mt-north-half?variant=47655962575066)) * NatGeo Map 792 ( [https://www.amazon.com/Massanutten-Mountains-Washington-Geographic-Illustrated/dp/156695388X](https://www.amazon.com/Massanutten-Mountains-Washington-Geographic-Illustrated/dp/156695388X) ) +++++++++++++++++++++++++++++++++ **Waiver**: By RSVPing to this trip or any other DC UL trip, you agree to these guidelines and to DC UL's waiver liability terms: [https://dculbackpacking.com/about/liability-waiver/](https://dculbackpacking.com/about/liability-waiver/) **COVID-19 policy**: [https://dculbackpacking.com/about/covid-19-guidelines/](https://dculbackpacking.com/about/covid-19-guidelines/) **Dues**: Members and above, don't forget to pay your annual dues. You can check if you need to pay dues by seeing if the current year is listed next to your name in your DC UL profile. Applicants do not need to pay dues for their first trip. To pay your dues via PayPal, use this link: **[https://www.paypal.com/paypalme/JenniferAdach/15](https://www.paypal.com/paypalme/JenniferAdach/15)** ($10 annual dues plus a $5 suggested donation to City Kids Wilderness Project.) **Carpool**: As per our carpool policy, riders should pay drivers $0.10/mile. Passengers should anticipate paying around $13 or $14 for this trip.
Photograph Kenilworth Aquatic Gardens July 4th
Photograph Kenilworth Aquatic Gardens July 4th
In previous years, the rangers said they try to get to the park and open the gate by 7:45 AM. From the website: [https://www.nps.gov/keaq/index.htm](https://www.nps.gov/keaq/index.htm) Waterlilies are bountiful all over the park! Our volunteers moved the tropical lilies from the hothouses to the display ponds, and they are vibrant. Bird enthusiasts have been enjoying watching the 3 young fledgling red-shouldered hawks, nesting orchard orioles, and kingbirds. Turtles have been laying eggs, and tadpoles and frogs are abundant in the ponds. Every year, we visit Kenilworth Aquatic Gardens on July 4th. The lotus flowers start blooming in early June and will be plentiful by the end of the month. The best time to visit is in the morning, as the temperatures are cooler and the flowers close up in the heat of the day, usually around 1:30 pm. I know it is outside of the Virginia Beltway, but it is not far. It is a very unique place in Washington, DC. I will be there in my grey pickup and rain or shine (hopefully shine)! Bring: Tripod Comfortable shoes Water Fully charged batteries Empty memory cards Rain poncho and plastic bags for the camera and lens in case of rain. Share only your very best, most interesting shots after the field trip, and keep it down to between 5 and 10 photos. Park Facts Entrance Fee: Free Allow Dogs with lease: No Bathroom: Restroom in the Visitor Center Address: 1550 Anacostia Ave, NE, Washington D.C. 20019 Lat, Long: 38.913003, -76.940142 - Parking Lot Plus Code: W375+6W Washington, District of Columbia Website: https://www.nps.gov/keaq/index.htm I generally schedule this meetup on the Fourth of July, as I would have the day off. They are open on July 4th, but one year we waited until 9:00 AM until a ranger showed up to unlock the gate, and it wasn’t a holiday. I also want to mention security, as in the past, a photographer in my group was at the gardens and saw someone’s car being broken into in the parking lot. From the parking lot, walk towards the gardens down the path. I usually stay to the left and head into the lotus fields. Please be careful, as there are just dirt paths between the fields, and if there has been a lot of rain, there can be ruts, and I almost twisted my ankle. You actually need a fairly long lens, as the lotus flowers are tall and can be some distance away. A wide angle is only good for some overall shots, and a good-sized macro works as well. Another thing folks do not realize is that the flowers do bloom into September, but have many full blooms. This is one park where you do not have to worry about mosquitoes, as they are eaten by pond beetles, dragonflies, and damselfly larvae, and also by frogs and birds. There is a boardwalk at the back of the flower fields that goes out to a marsh area. I have seen many types of birds and dragonflies in that area. Being there makes it hard to believe that you are in Washington, DC. On the way out, allow some time to check out the small ponds with different lotus and lilies that also attract frogs and dragonflies. Why you will not see any mosquitoes in the park: https://www.nps.gov/keaq/learn/nature/insects.htm By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.
Draw together at Union Station
Draw together at Union Station
It's going to be hot! Let's stay inside and meet at Blue Bottle Cafe at Union Station. Between the architecture and the people, we will have plenty of inspiration. There is also an ongoing exhibit of cars from Ford for the [Ford USA 250 exhibition](https://fordauthority.com/2026/07/ford-usa-250-celebration-features-some-amazing-vehicles/), which might inspire your drawings!
Sunday Skate - LeDroit Park Loop!
Sunday Skate - LeDroit Park Loop!
☀️🛼 **SUNDAY SKATE FUN: NW, LeDroit Park & The Met Branch Trail!** 🛼☀️ Ready for another beautiful Sunday roll? Since Freedom Plaza is still closed, we are shifting our starting point just across the street. The one and only **Big Mike** is leading the pack this week for an awesome, scenic loop through the heart of DC! This route takes us up through Northwest DC on New Hampshire Ave to a meander through LeDroit Park. We will close the loop via the Metropolitan Branch Trail before circling back through Capitol Hill and the National Mall. ### ⏱️ The Timing * **Meet Up:** 10:00 AM * **Roll Out:** 10:10 AM sharp! * **Meeting Location:** **Pershing Plaza** (since Freedom Plaza is closed) * **Skate Leader:** Big Mike ### 🗺️ The Route * **Distance:** \~12 miles * **Elevation Gain:** 420 feet * **Difficulty:** Intermediate * **Interactive Map Link:** [https://onthegomap.com/s/dmo62ogu](https://onthegomap.com/s/dmo62ogu) ### 🎒 What to Bring * **Water & Snacks:** Stay hydrated, friends! * **Safety Gear:** Helmets and pads are highly recommended. * **Good Vibes:** Ready to roll and have a blast! Grab your skates, check your gear, and let's get moving. See you Sunday at Pershing Plaza! #weareskatedc For up to the minute details, check Facebook and Instagram. Facebook: https://www.facebook.com/groups/WashingtonAreaRoadskaters/events Instagram: https://www.instagram.com/weareskatedc/ We hope to see you Sunday!

Mapping Events Near You

Connect with your local Mapping community

Let's Discover the Discovery District
Let's Discover the Discovery District
IxDA Chat n Pancakes
IxDA Chat n Pancakes
You can sleep in on the Sesquicentennial (observed), we’re shifting to the following Friday. But join the local UX community for a chat and some biscuits to catch up. If you were in CA for Figma Config, tell us all the lines and you can tell me how I can animate an SVG without coding it by hand, and why I’d even want to. Thanks to the team at Nationwide of supporting the group.
Stop Guessing: How to Measure and Improve LLM Outputs
Stop Guessing: How to Measure and Improve LLM Outputs
Most people use LLMs by feel: ask a question, read the answer, decide whether it “seems good,” and move on. That works for casual use. It does not work when you are building software, automating workflows, writing important documents, or relying on AI for anything that needs to be repeatable. In this talk, we’ll look at how to improve and evaluate the inputs and outputs of LLMs using practical measurement techniques. We’ll cover how prompt changes affect results, how to compare outputs, how to build simple evaluation sets, and how math-based methods like similarity scoring can help you move beyond guesswork. This will be beginner-friendly, so even if you don't know anything about AI, you should get something out of it. However, this will be a little more technical than our intro talks. You do not need to be an AI researcher, but programmers and technically curious attendees will get a lot out of it. We’ll cover: * Why “it looks good” is not enough * How to improve prompts by changing the input, context, and constraints * How to compare LLM outputs more systematically * Basic evaluation techniques for accuracy, consistency, and usefulness * How embeddings, cosine similarity, and scoring can help evaluate results * Where automated evaluation works — and where humans still need to stay in the loop By the end, you’ll have a practical mental model for treating LLMs less like magic and more like systems you can test, measure, and improve. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.
Cocoaheads
Cocoaheads
We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd
Blendonwood Ravine Day Hike, 10:30 am
Blendonwood Ravine Day Hike, 10:30 am
Watching the Doo Dah Parade
Watching the Doo Dah Parade
Pop-up Book Club 5: Rabbit, Run by John Updike
Pop-up Book Club 5: Rabbit, Run by John Updike
Let’s meet and discuss John Updike's Rabbit, Run, the first in his series of four novels following the life, hopes, and disappointments of former local basketball star, Harry "Rabbit" Angstrom, as he fitfully confronts and evades adulthood.