What we’re about
Who We Are:
The Seattle Triathlon Group is a non-profit organization in the Seattle area offering group events to local triathletes and multi-sport enthusiasts. Our goal 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.
Our 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 $25 / 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+)
See all- Early Morning Madison Open Water SwimMadison Park Public Swimming Beach, Seattle, WA
Join me this Thursday bright and early for some "laps" at Madison Park! For those that haven't been here before, this beach has good options for swimming alongside the shore in shallow water. While this event is non-lifeguarded and swim-at-your-own-risk, this is a good venue for those comfortable with pool swimming but just getting used to open water conditions. You should be able to swim "laps" parallel to shore where it's shallow enough to stand.
Please arrive at 6:15. I'll do a short check-in and safety briefing, toes in the water by 6:30 AM and will swim for approximately 45 minutes until 7:15am.
Location: I'll be down at the water near the center of the beach area. What3words = impact.wires.metro
Equipment and Safety:
- A brightly colored swim cap and swim buoy are required for safety/visibility.
- In order to participate in any Seattle Triathlon Group event, you must sign our electronic waiver. Waivers only need to be signed once per year or if your contact info has changed. You can login to your account at https://www.seattletri.org/dashboard to check. I will only be accepting electronic waivers - please complete the waiver ahead of time! No waiver, no swim!
- Our Open Water Swims (OWS) are non-lifeguarded, swim-at-your-own-risk events. As such, it is imperative that you be certain of your comfort level and ability to OWS. These are not designed for, nor should they be used for learning how to swim, or for inexperienced open water swimmers. An inexperienced OWS is a danger to themselves, and those around them. If you are not certain about your OWS capabilities, we suggest practicing at a lifeguarded swim beach or at an event designated for beginning open water swimming.
- There is NO guarantee of access to changing rooms/lockers, or gear watch.
- A swim buoy with a dry pouch is useful to bring your phone and keys with you on the swim. There will not be anyone watching gear you leave on the beach.
- A wet suit is highly recommended. The wet suit is especially helpful early in the season but is not necessary.
Please feel free to ask any questions in the comments.
Looking forward to seeing everyone! - 🏊 SLOWS 🏊 (Sammamish Lake Open Water Swim)Sammamish Landing, Sammamish, WA
Details
Join us for a Sammamish Lake Open Water Swim (SLOWS) evening swim! This event is for experienced open water swimmers ONLY!
🕘 Start time: 5:30 PM check-in and get suited up, 6:00pm toes in the water.
📍 Location: We meet at the Sammamish Landing. 4607 East Lake Sammamish Parkway NE · Sammamish, WA.
⏱️ Duration: We'll stick around for an hour of swimming, but you don't have to swim that entire time - the time/distance you go is up to you!Equipment and Safety:
- A brightly colored swim cap and swim buoy are required for safety/visibility.
- In order to participate in any Seattle Triathlon Group event, you must sign our electronic waiver. Waivers only need to be signed once per calendar year or if your contact info has changed. I will only be accepting electronic waivers - please complete the waiver ahead of time! No waiver, no swim!
- Our Open Water Swims (OWS) are non-lifeguarded, swim-at-your-own-risk events. As such, it is imperative that you be certain of your comfort level and ability to OWS. These are not designed for, nor should they be used for learning how to swim, or for inexperienced open water swimmers. An inexperienced OWS is a danger to themselves, and those around them. If you are not certain about your OWS capabilities, we suggest practicing at a lifeguarded swim beach or at a event designated for beginning open water swimming.
- There is NO guarantee of access to 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.
- A wet suit is highly recommended. The wet suit is especially helpful early in the season but is not necessary.
Please feel free to ask any questions in the comments.
Let’s have a great 2025 season!!! Go STG!!
- Beaver Lake Open Water Swim (BLOWS) 2025Beaver Lake Park, Sammamish, WA
Join us for a swim in Beaver Lake!
This event is for experienced open water swimmers ONLY!
Please arrive at 7:15 - 7:30 AM to check in, get geared up, and listen to the safety briefing before we get in the water. We will plan to start swimming at 7:30 and will swim for approximately 1 hour.
Location: We meet at tables near in the Pavilion or to the left of it depending on whether the Pavilion area is reserved.
Equipment and Safety:- A brightly colored swim cap and swim buoy are required for safety/visibility.
- In order to participate in any Seattle Triathlon Group event, you must sign our electronic waiver. Waivers only need to be signed once per year or if your contact info has changed. You can login to your account at https://www.seattletri.org/dashboard to check. I will only be accepting electronic waivers - please complete the waiver ahead of time! No waiver, no swim!
- Our Open Water Swims (OWS) are non-lifeguarded, swim-at-your-own-risk events. As such, it is imperative that you be certain of your comfort level and ability to OWS. These are not designed for, nor should they be used for learning how to swim, or for inexperienced open water swimmers. An inexperienced OWS is a danger to themselves, and those around them. If you are not certain about your OWS capabilities, we suggest practicing at a lifeguarded swim beach or at an event designated for beginning open water swimming.
- There is NO guarantee of access to changing rooms/lockers, or gear watch.
- A swim buoy with a dry pouch is useful to bring your phone and keys with you on the swim.
- A wet suit is highly recommended. The wet suit is especially helpful early in the season but is not necessary.
Please feel free to ask any questions in the comments.
Looking forward to seeing everyone!
