What we're about

Who We Are:
The Seattle Green Lake Triathlon Group (SGLTG) is a non-profit organization in the Seattle area offering group events to local triathletes and multi-sport enthusiasts. The goal of SGLTG is to offer free group training and support to triathletes of all levels and abilities, whether you’re new to the sport or a seasoned veteran.

What We Do:
Free group open water swims, cycling and running are offered throughout the week. We compete together at events throughout the year, including sprint, Olympic, half and full IRONMAN distances.
SGLTG members help each other, train together and share tips and information about the ins and outs of triathlons. 
Join our Facebook group to share articles, tips and advice with other members and learn more about social events, and follow us on Twitter at @SGLTG.

Membership Info:
We are a free club. You can come join us in any of our group activities listed in our Events section.
You can choose to become a registered member for a Membership Fee of $10 / year.
Registered members will have access to:

  • USAT Participation Accident Insurance Coverage
  • Discount Codes to races
  • Discounts with our Sponsors
  • Club Gear Store
  • Discounts at special club clinics
  • Take part in shaping the Club by being a voting member at our Club meetings

Upcoming events (4+)

PM GLOWS (Green Lake Open Water Swims)

Green Lake Bathhouse

Join us for a swim in Green Lake! We meet at the bench/cove just north of the lifeguard area on the WEST beach (What3Words app = reef.puppy.handle) and then swim for any distance you like (easily swim up to 1 mile). A brightly colored swim cap, a buoy are required for safety and a wet suit is highly recommended. The wet suit is especially helpful early in the season but is not necessary. Please arrive at 6 to sign waivers and listen to the safety briefing. We will plan to start swimming at 6:30.
There are no changing rooms/lockers, or gear watch on the beach. A swim buoy with a dry pouch is useful to bring your phone and keys with you on the swim.
*** RSVP's and Electronic Waivers will be checked at 5 PM, RSVP's will be closed at that time, ANYONE who comes and didn't RSVP BEFORE THE 5 PM close will need to sign the paper waiver upon arrival, NO EXCEPTIONS!! The more paper waiver signatures that need to be gathered the longer it takes for the host to be ready! SO SIGN UP EARLY AND SIGN THE ELECTRONIC WAIVER!! *** If your not sure you will make it, but plan to, it's better to RSVP that you are coming and then if you can not make it you can comment here or pm your host.
Please post in the comments below how far you are looking to swim and feel free to ask any questions.
In order to participate in any SGLTG event, you must sign a waiver. Paid members must sign the paid member waiver once per year. Non-paid members must sign a non-member waiver for every event that they attend. In hopes of expediting the waiver process at each event, please sign your waivers electronically by using the following link --
https://sgltg.org/sgltg-participant-waiver/waiver/
-- Again, if your a paid member you will need to log in and sign the waiver ONLY once for 2023, if not then there is a separate link on that page for the non-paid members waiver. Electronic waivers are checked at 5:00 PM when RSVPs close, after that time, you will need to sign the paper waiver on the beach.
By RSVPing for this and any Seattle Green Lake Triathlon Group (SGLTG) event I agree to the following:
I know that triathlon (swimming/biking/running) and participating in SGLTG events are potentially hazardous activities. I should not participate in group activities unless I am medically able and properly trained. I assume all risks associated with triathlon and participating in SGLTG events including but not limiting to, falls, contact with other participants, the effects of the weather including high heat and/or humidity, the conditions of the road and traffic on the various courses and routes, water conditions including but not limited to temperature and visibility, and such risk being known and appreciated by me. Having read this waiver and knowing these facts, and in consideration of my attendance at this event, I for myself and anyone entitled to act on my behalf, waive and release the Seattle Green Lake Triathlon Group, and all sponsors, their representatives and successors from all claims or liabilities of any kind arising out of my participation in this activity even though that liability may arise out of negligence or carelessness on the part of the person named in this waiver. I further grant permission to all of the foregoing to use any photographs, motion pictures, recordings, or any other record of this event for any legitimate purpose.

Mid-Morning Run

Seattle Public Theater

Come and join me with our sister group - Seattle Green Lake Running Group where I host the weekly Saturday 9am Mid-Morning Run. This run meets year round in the Bath House Theater Parking Lot! (What3 Words app = wicked.hops.urban) We'll have routes from 3-13 miles to join in on.

THIS IS JUST A POINTER EVENT -- go to the SGLRG Meetup event to RSVP and comment what distance and pace you want to do this Saturday... the more the merrier!

You can comment here to let me know if you have questions/issues but routes, distances and paces and other participant comments will all be on the SGLRGs event page.

The following link is for the Seattle Green Lake Running Group meetup general page, join there. -- https://www.meetup.com/Seattle-Greenlake-Running-Group/

The Seattle Green Lake Running Group has runs every day of the week and all different types for anything that you can want... track (AM and PM), trail, no drop, fartlek, after work runs (with some social/dinner time after), stairs, long runs on Saturday, even an easy (with a bistro treat once a month on Sunday) -- Check out all they have to offer out in their own meetup group @
https://www.meetup.com/Seattle-Greenlake-Running-Group/

PM GLOWS (Green Lake Open Water Swims)

Green Lake Bathhouse

Join us for a swim in Green Lake! We meet at the bench/cove just north of the lifeguard area on the WEST beach (What3Words app = reef.puppy.handle) and then swim for any distance you like (easily swim up to 1 mile). A brightly colored swim cap, a buoy are required for safety and a wet suit is highly recommended. The wet suit is especially helpful early in the season but is not necessary. Please arrive at 6 to sign waivers and listen to the safety briefing. We will plan to start swimming at 6:30.

There are no changing rooms/lockers, or gear watch on the beach. A swim buoy with a dry pouch is useful to bring your phone and keys with you on the swim.

*** RSVP's and Electronic Waivers will be checked at 5 PM, RSVP's will be closed at that time, ANYONE who comes and didn't RSVP BEFORE THE 5 PM close will need to sign the paper waiver upon arrival, NO EXCEPTIONS!! The more paper waiver signatures that need to be gathered the longer it takes for the host to be ready! SO SIGN UP EARLY AND SIGN THE ELECTRONIC WAIVER!! *** If your not sure you will make it, but plan to, it's better to RSVP that you are coming and then if you can not make it you can comment here or pm your host.

Please post in the comments below how far you are looking to swim and feel free to ask any questions.

In order to participate in any SGLTG event, you must sign a waiver. Paid members must sign the paid member waiver once per year. Non-paid members must sign a non-member waiver for every event that they attend. In hopes of expediting the waiver process at each event, please sign your waivers electronically by using the following link --

https://sgltg.org/sgltg-participant-waiver/waiver/

-- Again, if your a paid member you will need to log in and sign the waiver ONLY once for 2023, if not then there is a separate link on that page for the non-paid members waiver. Electronic waivers are checked at 5:00 PM when RSVPs close, after that time, you will need to sign the paper waiver on the beach.

By RSVPing for this and any Seattle Green Lake Triathlon Group (SGLTG) event I agree to the following:

I know that triathlon (swimming/biking/running) and participating in SGLTG events are potentially hazardous activities. I should not participate in group activities unless I am medically able and properly trained. I assume all risks associated with triathlon and participating in SGLTG events including but not limiting to, falls, contact with other participants, the effects of the weather including high heat and/or humidity, the conditions of the road and traffic on the various courses and routes, water conditions including but not limited to temperature and visibility, and such risk being known and appreciated by me. Having read this waiver and knowing these facts, and in consideration of my attendance at this event, I for myself and anyone entitled to act on my behalf, waive and release the Seattle Green Lake Triathlon Group, and all sponsors, their representatives and successors from all claims or liabilities of any kind arising out of my participation in this activity even though that liability may arise out of negligence or carelessness on the part of the person named in this waiver. I further grant permission to all of the foregoing to use any photographs, motion pictures, recordings, or any other record of this event for any legitimate purpose.

Sammamish Lake Open Water Swims (SLOWS)

Location visible to members

Join us for a swim in Lake Sammamish ! Swim for any distance you like (easily swim up to 1 mile). A brightly colored swim cap, a buoy are required for safety and a wet suit is highly recommended. The wet suit is especially helpful early in the season but is not necessary. Please arrive at 5 to sign waivers and listen to the safety briefing. We will plan to start swimming at 5:30.
There is a shower where you can change if needed, but we usually change by the BBQ table. There is no gear watch on the beach. A swim buoy with a dry pouch is useful to bring your phone and keys with you on the swim.
*** RSVP's and Electronic Waivers will be checked at 5 PM, RSVP's will be closed at that time, ANYONE who comes and didn't RSVP BEFORE THE 5 PM close will need to sign the paper waiver upon arrival, NO EXCEPTIONS!! The more paper waiver signatures that need to be gathered the longer it takes for the host to be ready! SO SIGN UP EARLY AND SIGN THE ELECTRONIC WAIVER!! *** If your not sure you will make it, but plan to, it's better to RSVP that you are coming and then if you can not make it you can comment here or pm your host.
Please post in the comments below how far you are looking to swim and feel free to ask any questions.
In order to participate in any SGLTG event, you must sign a waiver. Paid members must sign the paid member waiver once per year. Non-paid members must sign a non-member waiver for every event that they attend. In hopes of expediting the waiver process at each event, please sign your waivers electronically by using the following link --
https://sgltg.org/sgltg-participant-waiver/waiver/
-- Again, if your a paid member you will need to log in and sign the waiver ONLY once for 2023, if not then there is a separate link on that page for the non-paid members waiver. Electronic waivers are checked at 5:00 PM when RSVPs close, after that time, you will need to sign the paper waiver on the beach.
By RSVPing for this and any Seattle Green Lake Triathlon Group (SGLTG) event I agree to the following:
I know that triathlon (swimming/biking/running) and participating in SGLTG events are potentially hazardous activities. I should not participate in group activities unless I am medically able and properly trained. I assume all risks associated with triathlon and participating in SGLTG events including but not limiting to, falls, contact with other participants, the effects of the weather including high heat and/or humidity, the conditions of the road and traffic on the various courses and routes, water conditions including but not limited to temperature and visibility, and such risk being known and appreciated by me. Having read this waiver and knowing these facts, and in consideration of my attendance at this event, I for myself and anyone entitled to act on my behalf, waive and release the Seattle Green Lake Triathlon Group, and all sponsors, their representatives and successors from all claims or liabilities of any kind arising out of my participation in this activity even though that liability may arise out of negligence or carelessness on the part of the person named in this waiver. I further grant permission to all of the foregoing to use any photographs, motion pictures, recordings, or any other record of this event for any legitimate purpose.

Past events (2,267)

Sammamish Lake Open Water Swims (SLOWS)

Sammamish Landing