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- PM GLOWS (Green Lake Open Water Swims)Green Lake Bathhouse, Seattle, WA
Join us for a evening swim in Green Lake! This event is for experienced open water swimmers ONLY!
🕘 Start time: 6:00 PM check-in and get suited up, 6:30pm toes in the water.
📍 Location: We meet at the bench/cove just north of the lifeguard area on WEST Green Lake Beach (What3Words app = reef.puppy.handle).
⏱️ 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!
🏊 Route: Swim across Green Lake with lake buoys/landmarks for approx. distances of 440 yd (1/4 mile), 880 yd (1/2 mile), 1300 yd (3/4 mile) and 1760 yd (1 mile). Swim for any distance you like in the hour (easily swim up to 1 mile non-stop).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 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.
Thanks and Tri On! - 🏊 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 year or if your contact info has changed. You can login to your account at https://www.seattletri.org/dashboard to check if you have a waiver completed. 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.
- HTFU Weekly Rides at Gas Works Park 2025Gas Works Park, Seattle, WA
HTFU ("Hills To Fly Up" but sometimes known by a less appropriate name) is our regular Tuesday night hill climb/power development workout. Come prepared for 60-90 minutes of steep hills and hard efforts. This will help you develop more power and mentally prepare you for challenging sections of your race course.
Equipment: Helmets are required to ride. A good headlight and taillight are recommended. Also MUY IMPORTANTE make sure that your bike is in good working order and there is plenty of life left in your brake pads. Can not stress this enough... Check your gear BEFORE coming out! Riders are encouraged to bring road or triathlon bikes for the sake of keeping the group pace consistent, but we'll gladly welcome a new cyclist on a mountain or hybrid bike. Bring your willingness to suffer and leave your inhibitions at home as we will tackle some of the steepest hills in Seattle.
Pace and Regrouping: HTFU is designed to get your heart rate close to anaerobic threshold and give you 3-4 chances to get close to your max HR. As everyone will conquer the hills at their own best-effort pace, we regroup frequently (at the top of almost every hill) and try not to lose anyone. Please note that this is a training ride and not a social ride. This requires that you pay attention to the group dynamics as we ride on open roads and try to stay with the group.
Routes: Our routes change every week, going through a 4 week cycle from easiest to hardest. This is a no drop ride. Everyone is encouraged to join. Challenge yourself.
You should join us, even if climbing hills is intimidating. We deliberately do hard climbs so that come race day, we are mentally and physically ready for whatever the race director might throw at us.
Our route rotation:
HTFU 75th
HTFU Queen Anne
HTFU 98th
HTFU BellevueLocation: We meet in the parking lot of Gas Works Park and start/end all our rides from there. Be aware on nice days this parking lot will fill up in the afternoon; if you're driving to this event, give yourself some extra time to find parking.
Time: Be ready to roll at 6:30 pm. We will have a brief safety speech, then roll a soon as it is done. Again, arrive early enough to be ready to roll at 6:30 sharp. If you are late, don’t expect to join the ride. Most rides are about 1.5 hours in length.
Weather: Rain or significant chance of rain cancels this ride. We'll make the final call no later than 5:30pm day of the ride. Please check back in the comments section prior to ride for cancellation due to bad weather.
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 ride!
- AM MLOWS (Martha Lake Open Water Swims)Martha Lake Park, Martha Lake, WA
Join us for a morning swim in Martha Lake! This event is for experienced open water swimmers ONLY!
🕘 Start time: 6:00 AM check-in and get suited up, 6:30 am toes in the water.
📍 Location: We meet near the beach/pavilion about 300 yards northwest of the parking lot. You have to walk through the park and past the restrooms.
⏱️ 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!
🏊 Route: Swim across Martha Lake approximately 1760 yd (1 mile). Swim for any distance you like in the hour (easily swim up to 1 mile non-stop).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.
Please feel free to ask any questions in the comments.
Thanks and continue to enjoy the 2025 Tri Season!
