Bouldering

**Discover the Power of Public Speaking & Leadership — Join the Blue Danube Leaders!** Are you looking for a new hobby that's not only fun but also helps you grow? Join us at **Blue Danube Leaders**, a Toastmasters club where you can improve your **public speaking**, **leadership**, and **communication** skills - all in a friendly, encouraging environment. Whether you’re just starting out or are already a seasoned speaker, you're welcome as our guest. **What happens at a Meeting?** Our meetings follow a structured, interactive format: * **Welcome and Introduction** The meetings begin with a warm welcome from the Club President and the host (called *Toastmaster of the Evening)*. Then, we do a short introduction round where everyone - guests too - say a few words on the evening's topic. * **Word of the Day** A challenge that builds your language skills and sharpens your attention to word choice. A special word is introduced and everyone is invited to use this word whenever they speak. * **Table Topics** This is an exciting segment! Volunteers - guests too! - are invited to speak for 1-2 minutes on a surprise question or topic. It's a great way to practice thinking on your feet. * ***Short Break of 10 minutes*** * **Prepared Speeches** * Members deliver speeches prepared ahead of time, usually 5-7 minutes in length. Each speech is a step in the Toastmasters learning pathway. * **Evaluations** Every speech will be thoughtfully evaluated by a designated Evaluator. These evaluations focus on strengths, improvement tips, and encouragement. It's a crucial part of the Toastmasters experience. * **Role Reports** Throughout the meeting, members take on supportive roles that ensure the flow of the evening and give everyone a chance to grow. **Be our guest!** This meetup is open to guests. Toastmasters have a separate platform for the member registration. There are always 10+ people in the meeting. Join us at **18:45 CET** for a casual **Meet & Greet**; The program starts **sharp at 19:00 CET.** After the meeting, we often head to a nearby spot for food or drinks - a great way to relax and connect! Learn more: https://bluedanubeleaders.at/ Email: info@bluedanubeleaders.at

-Outdoor Functional Training for All Fitness Levels- Join us as we combine healthy, balanced movement with fun, gamified ideas to give you our unique FUNctional training! And in case that doesn’t really tell you what to expect, just think short intervals of exercise combined together in a playful and interactive way to help you strengthen your body in a sustainable way while allowing you to meet new people (and often even forget how hard you’re working out). As a reminder for those nervous about their fitness level: Everything we do, we do with all fitness levels in mind; so the exercises are always adjustable to your level and you’re always strongly encouraged to take it at your own pace - I mean, we’re not called My Pace for nothing! How to find us: We meet and train behind the calisthenics workout station on the Zirkuswiese of the Prater. Here a link to the location on Google maps: [https://maps.app.goo.gl/QdRPEaYTiavZbmVW7](https://maps.app.goo.gl/QdRPEaYTiavZbmVW7) Cost: In the interest of inclusivity, we've decided to make our sessions donations based here, so you're invited to pay what you can afford. If that actually makes you more uncomfortable and doesn't make it easier to come, know that we've received donations from €2 to €20 and they all made us very happy, because our primary goal is to get people moving and to show them it can be fun all in all. The money is secondary. One other thing that’s useful to know: - In the case of bad weather, we do have a back-up location that will protect us from the rain. Should we need to move, we will change the location of this event here. Please feel free to check back here before any event where you suspect bad weather or, even better, simply get in touch with us! We’re available via WhatsApp message (+436802355041) or email (office@mypace.at) If you'd like to know more about My Pace, feel free to visit our website at [https://www.mypace.at](https://www.mypace.at)

Come and join us! Learn the basics, have fun and socialize. This lesson is designed for beginners and lower intermediate level players and those looking to improve their skills in a friendly, encouraging atmosphere. In these lessons you are going to learn how to play tennis with correct technique and improve your agility, speed, strength and endurance. * Tennis rackets can be rented from reception * The price of the lesson is 25€ * Latest cancelation : 48h before the lesson The court number will be commented under this event shortly before the lesson starts. Please be on time so that we can make the most out of our time on the court. I’m looking forward to meeting you

There's something about tango that gets under your skin. You watched it, or tried it once, and something in you probably felt really good. Because tango is connetion in the present moment. Tango Fundamentals 1 is a structured 6-week course designed to take your tango journey through the basic steps and figures of Argentine tango. This is not just about copying moves - but rather actually understanding how tango works. The connection, the lead and follow, the conversation between two people through movement. By the end of these six weeks, you'll understand the basic concepts of tango, the etiquette of milongas, how to invite someone to dance - and you'll actually be able to dance. **What's included:** * 6 weekly classes - every Monday, 75 minutes each * Bonus 4 online evenings - stretching, strength, technique and mindfulness to support your body and focus in your Tango Journey * 1 Practica at the end - a real social dance to put it all together **Investment:** €165 full price, €125 for students. There is an option for classes without an online offer. Just write me a message. Single class: €28 / student €22 **This is for you if:** * You've tried tango once and want to go deeper * You've always wanted to learn but never knew where to start * You want a real foundation, not just a one-off workshop Spots are limited - this is a small group, so everyone gets proper attention. Drop a message here or reply directly to reserve your spot. 🙏

**As we're having limited space at our host, we have set the maximum attendees to be 40 and enabled the waitlist. If you cannot make it to the event, please change your RSVP so someone else can take your spot!** Agenda 18:00 doors Open 18:20 welcome, doors closing soon 18:30 **Unbreakable by Design: The Secret Tech of Antifragile Software** 19:30 Networking 20:00 **Heaps of Trouble -- Debugging Java OOM** 21:00 networking **Unbreakable by Design: The Secret Tech of Antifragile Software** How to turn pressure into performance? Anti-fragility of a software characterizes the benefit derived from the variability in faults and errors that have effected the system. Dependable software systems can learn from incidents & poor practices, how to avoid and to deal with them, to increase availability and performance. Despite their growing complexity and increasing size, modern software applications must satisfy strict quality requirements that impose short defect fixing and release cycles. To reduce the developers teams workload, and pressure to produce high-quality software on time, many software engineering tools and concepts are subject to continuous extensive development and improvement. In this talk, we will take a closer look at the technical aspects of anti-fragile software systems and how teams deal with errors and reliability. Through the technical analysis of anti-fragility and resilience we will discuss the advantages and drawbacks of systems and techniques, and not at least the relation between anti-fragility in the development process and the anti-fragility of the resulting software product. The audience can expect the topics such as design & operating principles, fault tolerance, fault handling, e.g. automatic software repair, fault injections, and TDD. The overview of methods and principles should encourage developers to adopt anti-fragility and resilience principles into their software architectures. **About the Speaker** **Iryna Dohndorf** is a software engineer at Karakun, where she works on customer projects using the Java technology stack. With strong technical expertise, genuine curiosity, and a deep passion for computer science, she develops technologies that tackle the challenges of modern companies and today’s society. As an active member of the BaselOne Program Committee, the Devoxx UK Program Committee, and a frequent international speaker, she is dedicated to inspiring developers and supporting the growth of the global Java community. An enthusiastic interdisciplinary researcher and developer, Iryna has conducted research in modeling and optimization at TU Dortmund and has worked on software for autonomous driving, government agencies, and EU initiatives supporting the advancement of organic farming. Outside of work, she enjoys spending time with family and friends, and is passionate about swimming, skiing, and—most recently—cycling. Iryna’s recent articles include: * https://dev.karakun.com/2025/04/02/tdd-genai.html * https://dev.karakun.com/2024/06/26/ai-software-development.html * https://dev.karakun.com/2025/09/18/Kotlin-K2-Compiler.html * https://dev.karakun.com/2024/07/24/devoxxuk.html You can learn more about her software development work and research at: * https://scholar.google.com/citations?user=eIKkTkYAAAAJ&hl=en * https://www.amazon.com/-/de/dp/B00PULZWO8/ **Heaps of Trouble -- Debugging Java OOM** This presentation dives into the practical art of diagnosing Java OutOfMemory errors. We begin with a concise overview of how the Java heap is structured and managed, then move to the command line with jmap—demonstrating how to force heap dumps on demand and extract live histograms to spot memory hogs at a glance. Next, we switch to VisualVM for a hands-on look at opening, inspecting, and—crucially—comparing heap dumps to pinpoint leaks and growth patterns between states. The session culminates with advanced techniques: writing JavaScript snippets inside VisualVM to traverse the heap graph, filter objects, and automate custom analyses that go beyond the built-in tooling. Whether triaging a production incident or hardening an application, attendees will leave with actionable tactics to turn “heaps of trouble” into clear, debuggable insights. **About the Speaker** **Robert C Kahlert** is a Senior Software Researcher with Posedio. He hails from symbolic AI research and has worked on products and projects in pharmacology, defense, medicine, NLP and resource exploration. His interests include software engineering, compilers, cloud computing, knowledge representation and databases. In his spare time, he enjoys making the most of Vienna's amazing museums.

This is a weekly training session with Vienna Gaels, a Vienna-based Irish GAA club playing Gaelic football and hurling. The session is relaxed, structured, and welcoming, with coaching provided throughout. Agenda • Arrive from 5:45 and meet the group • Warm-up as a full group • One hour of Gaelic football training and one hour of hurling training • The order alternates each week • Wrap-up shortly before 8:00 pm Who it’s for • All levels are welcome • New players are encouraged • No previous experience of Gaelic sports is needed • Men’s and ladies teams train on the same night What to bring • Sportswear suitable for outdoor training • Football boots or trainers (astro or moulded studs work best) • Water No equipment is required to try your first session. We can provide hurleys and helmets if needed. Where & how to find us 📍 Location: Meiereistraße 20, 1020 Wien Training takes place on the pitches beside the Ernst Happel Stadium. If you arrive and don’t immediately see the group, wait by the pitches and someone will come over to you. Good to know • Training takes place every Monday from 6:00–8:00 pm • Sessions go ahead in all weather conditions • Training runs even if Meetup attendance looks low, as many regular members do not use Meetup If you have any questions beforehand, feel free to message via Meetup — otherwise just turn up and give it a go 🍀

Mixed indoor volleyball. We play intermediate and advanced levels in a friendly and respectful environment. We play for enjoyment. Please note that numbers are important, so if you cannot come, please cancel 48 hours in advance so others can join. Failure to do so will result in exclusion from future games and payment of any outstanding fees. Best regards.

**Founders Running Club** (FRC) brings founders, investors, tech, creative people and startup enthusiasts together for weekly easy runs and networking. We like to be comfortable when we run and finish with coffee and conversations. Choose your pace or follow a pacer—pets, friends, family, are welcome. 🗓️ Launched in San Francisco, July 16, 2022 🌍 Now in 35+ cities 📅 Running + Networking events + Community **Join the community** [http://foundersrc.com/chats](http://foundersrc.com/chats) You can drop your layers, bags & whatever else at Café Brenner before the run. 📍 Meeting point: 09:55 at Café Brenner (https://share.google/YQ03QVDuYaga5AFRm) – drop your stuff, say hi. 👟 10:00 warm-up starts outside of the building (Superbude) ➡️ Then we head off on the \~5K Prater loop. ☕ Post-run: coffee back at Café Brenner. ❗️🔒 The storage room at Café Brenner will be locked during the run – but please note: Neither Founders Running Club nor Café Brenner does assume any liability. **Stay updated**: Instagram [http://instagram.com/foundersrc/](http://instagram.com/foundersrc/) Podcast [http://podcast.foundersrc.com/](http://podcast.foundersrc.com/) LinkedIn [http://linkedin.com/company/foundersrc/](http://linkedin.com/company/foundersrc/) Strava [http://strava.com/clubs/foundersRC](http://strava.com/clubs/foundersRC) Website [http://foundersrc.com/](http://foundersrc.com/)

Hi All, 📅 *Friday, June 19* \| 📌 **Meeting Point:** "Meidlinger Tor" entrance – i will be holding a sign with "Live club" at 19:30. 🎻 *Concert starts at 20:45* 🎟️ *Free entrance – no tickets needed!* Follow us on Instagram: [The Live Club](https://www.instagram.com/the_live_club?igsh=amc4YnVrZHc5MGxk) Join What's up chat for smooth coordination: [What's Up of the Live Club](https://chat.whatsapp.com/Ly0VoZ4SnGDE2cM6BG9h47) See you there! KR Yulia & Georg

Join us on a relaxed evening bike tour along the Donauinsel to enjoy the sunset in a beautiful setting during the longest day of the year! We start at the bike rental at Copa Beach in Kaisermühlen and ride leisurely towards the eastern end of the Donauinsel. The route takes you past the Kraftwerk Freundau and offers wonderful views of the Danube and the surrounding nature along the way. We take a break at the end of the Donauinsel to watch the sunset in peace and enjoy the atmosphere. Afterwards, take a relaxed alternative route back to the starting point. 🚴‍♂️ **Important information:** * **Pace:** The tour is ridden at a slow, leisurely pace so that everyone can cycle along at a relaxed pace. * **Route:** The entire route is 100% paved and therefore ideal for all types of bikes. * **Lights compulsory:** Please bring a working front and rear light for your bike as we will be out and about after sunset. * **Distance:** 25 km. * **Duration:** The tour takes approx. 2 hours in total (including a break). 📌 **Bring along:** * A roadworthy bike * Bike lights (front and rear) * Optional: Drinks and snacks for the break 🌟 **Highlights:** * Relaxed evening on the Donauinsel * Beautiful sunset at the eastern end of the island * Community cycling in a relaxed atmosphere **Route:** [https://www.bergfex.at/mybergfex/activity/9b6682e3622e3c74bffb9375a8af0871/](https://www.bergfex.at/mybergfex/activity/9b6682e3622e3c74bffb9375a8af0871/)

-Outdoor Functional Training for All Fitness Levels- Join us as we combine healthy, balanced movement with fun, gamified ideas to give you our unique FUNctional training! And in case that doesn’t really tell you what to expect, just think short intervals of exercise combined together in a playful and interactive way to help you strengthen your body in a sustainable way while allowing you to meet new people (and often even forget how hard you’re working out). As a reminder for those nervous about their fitness level: Everything we do, we do with all fitness levels in mind; so the exercises are always adjustable to your level and you’re always strongly encouraged to take it at your own pace - I mean, we’re not called My Pace for nothing! How to find us: We meet and train behind the calisthenics workout station on the Zirkuswiese of the Prater. Here a link to the location on Google maps: https://maps.app.goo.gl/QdRPEaYTiavZbmVW7 Cost: In the interest of inclusivity, we've decided to make our sessions donations based here, so you're invited to pay what you can afford. If that actually makes you more uncomfortable and doesn't make it easier to come, know that we've received donations from €2 to €20 and they all made us very happy, because our primary goal is to get people moving and to show them it can be fun all in all. The money is secondary. One other thing that’s useful to know: - In the case of bad weather, we do have a back-up location that will protect us from the rain. Should we need to move, we will change the location of this event here. Please feel free to check back here before any event where you suspect bad weather or, even better, simply get in touch with us! We’re available via WhatsApp message or email. --- If you'd like to know more about My Pace, feel free to visit our website at https://www.mypace.at

This is our weekly event! Hey Badminton Enthusiasts! This meet-up is for all levels: beginners, intermediates and experts. Everyone is welcome to join, test their skills and have some fun together! The host will reserve courts in advance, that means please only register if you really plan to come (or cancel at least 24 hours before the event starts). The fee for this event is 12€ (for the 2 hours). If you plan on paying in cash, please bring the exact amount as the host might not have any change available. We are meeting at about 10:55 am near the reception by the lounge area (next to the courts). Come a bit earlier so you have time to change into workout/sports clothes. The locker rooms are free to use, but for the men lockers you need a padlock - or you can also take your bag of clothes upstairs to the courts if you do not have a padlock. Also, bring clean indoor sports shoes, your racket and a water bottle with you. There is a drinking fountain available if you need to replenish your bottle. If you do not have a racket, it is possible to rent rackets from the club, if necessary (3€). Sometimes the host or other members have spare rackets - please ask in the comment section below! If you are joining our events for the first time, WELCOME! Let the host know that you are new and they will find a place for you. Don't worry, we are an open and friendly group. We are sure you will develop connections with the people in our community in no time! Without further ado - let's play some badminton and have fun together!

**Would you like to learn badminton and finally hit the shuttle properly?** Our beginner training is exactly what you’re looking for! In small groups of up to 4 people, you will learn the basics step by step: * proper footwork * your first shots to simple game situations * how to serve properly * the game rules * and much, much more! *Recommendation:* Since you learn and build knowledge together as a group, **attending at least 4 consecutive sessions is ideal**. This way, you can grow as a team, benefit from each other, and make faster progress. **Who is this training for?** Anyone with little or no prior experience, but a willingness to learn how to properly play badminton! The host will reserve courts in advance, **that means please only register if you really plan to come** (or cancel at least 24 hours before the event starts). **The fee for this training is 16€ and includes the trainer, the shuttles and the court booking for one hour.** If you plan on paying in cash, please bring the exact amount as the host might not have any change available. The training is done in both German and English. Come a bit earlier so you have time to change into workout/sports clothes. The locker rooms are free to use, but for the men lockers you need a padlock - or you can also take your bag of clothes upstairs to the courts if you do not have a padlock. Also, please bring: * clean indoor sports shoes (no black soles) * your racket (or you can rent one from the club, if necessary (3€) * and a water bottle **After the training**, we are hosting our weekly Badminton Sunday event. You can use the opportunity to train and practice the skills you learned (separate event registration required in advance!). If you are joining our events for the first time, WELCOME! Let the host know that you are new and they will tell you the basic need-to-knows of our community! Without further ado - let's learn how to play badminton and have some fun together!

Whether you are just getting into the sport of climbing or simply looking to advance your skills in climbing, Intro to bouldering will offer you the skills necessary to take your climbing to the next level. Unlike top rope climbing where you have the aid of the climbing rope, bouldering relies solely on endurance and technique. Follow the link and grab your spot in the class to join us! https://climb-va.com/instruction/bouldering/ When: 3rd Monday of every Month Time: 6:30pm Duration: 1 hour 30 min Cost: Member $35 Non Member $40

Climbers of all skill levels are welcome to Join "[Sends with Friends](https://www.instagram.com/sends_with_friends_climbing?utm_source=ig_web_button_share_sheet&igsh=ZDNlZDc0MzIxNw==)" rock climbing community for an indoor bouldering event at [Bouldering Project -DC](https://maps.app.goo.gl/m6okjpQsjeSxTqVj8) gym. The first 25 climbers who come in through the doors get in for free, after that you'll pay $15 for a day pass. Rental shoes and chalk bag is provided free of charge. If this is your first time using Bouldering Project-DC facility consider taking the Intro to BP that starts 7:15PM and includes a tour of the facility. You must sign the Bouldering Project waiver and read, understand, and agree to Sends With Friends release of liability form before participating in this event. Please do so beforehand to avid creating a line at the front desk. You can find Bouldering Project waiver here: [First-Time-Visit](https://boulderingproject.com/first-time-visit/) and Sends With Friends Release of Liability form below: \* \* \* \* **Sends with Friends Rock Climbing Meetup Waiver and Release of Liability** **NOTICE:** By signing up for this event, you agree to the terms outlined below and acknowledge the inherent risks associated with rock climbing activities. Participation in any event organized by this Meetup group is contingent upon your agreement to this release form. **1\. Assumption of Risk:** I, the undersigned participant, acknowledge and fully understand that rock climbing is a high-risk activity. I am aware that participation involves risks including, but not limited to, physical injury, permanent disability, or death. These risks may arise from, but are not limited to, natural hazards, equipment failure, human error, and the actions or negligence of others. **2\. Release of Liability:** In consideration of being allowed to participate in any activity organized by this Meetup group, I hereby release and discharge the organizer(s), co-organizer(s), event leaders, and all other participants from any and all claims, demands, actions, or causes of action arising out of or connected to my participation, including claims arising from negligence or gross negligence. **3\. Personal Responsibility:** I acknowledge that I am solely responsible for my own safety during these events. I will use my own judgment in evaluating the risks involved and will take appropriate precautions, including but not limited to: * Wearing appropriate safety gear. * Using reliable climbing equipment. * Following established safety protocols. * Refraining from participating in activities beyond my skill level. **4\. Medical Fitness:** I affirm that I am in good health and physically capable of participating in rock climbing activities. I assume full responsibility for any medical conditions that may affect my ability to participate safely. **5\. Indemnity Agreement:** I agree to indemnify and hold harmless the organizer(s), co-organizer(s), event leaders, and other participants from any claims, damages, or expenses (including legal fees) arising out of or related to my actions or participation in these activities. **6\. Photo/Video Release \(Optional\):** By signing this waiver, I grant permission for any photographs or videos taken during the events to be used for promotional or group-related purposes. (Participants may opt out by notifying the organizer.) **7\. Agreement to Follow Rules:** I agree to abide by all rules, instructions, and guidance provided by the event organizers and leaders. Failure to comply may result in my removal from the group. **8\. Acknowledgment of Agreement:** By joining any event organized by this Meetup group, I acknowledge that I have read and understood this waiver and release form. I agree that my participation in any event constitutes my electronic or physical signature to this agreement.

New players are always welcome to come try it out! What you need: A bathing suit. Preferably something light and tight. We have extra gear for new players. But if you have your own pair of flippers, a snorkeling mask, and a snorkel then bring them along. Please bring this signed and completed form to practice: https://cdn1.sportngin.com/attachments/document/c7dc-2321473/USOA_Waiver_2022-07-07.pdf Unless you are already a member of USOA: https://www.underwater-society.org/page/show/4284471-usoa-registration To find us: You can tell the front desk that you are here for underwater hockey and they will let you in for free. You can ask them for help finding the pool. If no one is at the front desk just walk past it and there will be a set of stairs on the left. Take the stairs and take a right at the bottom of the stairs. The men's and women's locker rooms are straight ahead, and you will need to go through them to access the pool deck. Once you are out on the pool deck you will be exactly where we practice. Agenda: First 15 minutes: Arrival at the pool, getting gear from the shared gear bin, dividing into two teams, getting gear on. Minutes 15-30: Getting in the water, teaching any new players the basics Minutes 20-70: Scrimmage/practice. Minutes 70-75: Putting away club gear, putting the lane lines back in place, clearing the pool deck. (optional) afterwards: Go to a local restaurant for food, drinks, and socializing.

We will be hiking the loop trail, (counter clockwise) around the BeaverDam Reservoir starting at the brand new Reservoir Park VisitorsCenter. Beautiful views of the water and varied woodland areas. This is an 7.5 MILE loop hike around one of Northern Virginia's largest bodies of water. The loop is mainly flat with a tiny hill or two. I've rated the loop moderate because the distance is 7.5 miles and we will be hiking about 22 minutes per mile - just under 3 miles per hour. After the hike we'll head over to Lark Brewing. 24205 James Monroe Hwy, Aldie, VA 20105 for food and beverages. I will make every effort for your safety. You are hiking at your own risk. Dogs are welcome on the hike as long as they are good with groups, friendly and you follow all leash laws. I like kids but this is an adult event so please no kids or any one under 21. We do start on time so please plan accordingly. Meet in front of the bathrooms by the parking lot. Reservoir Park Trail on AllTrails https://www.alltrails.com/trail/us/virginia/reservoir-park-trail?sh=lkkoxr&utm_medium=trail_share&utm_source=alltrails_virality