Next Meetup

Centennial Trail Ride (updated time 0830)
Join us every Sunday this fall for a ride on centennial trail. 30 miles each way with minimal stops. Great for fall training, so join us for any distance you’d like. 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. Last minute online RSVPS will have to sign a paper waiver as well, so please sign early if possible. The link provided directs you to the paid and non-paid member waiver. If you are a paid member, you will have to log in to your SGLTG account to sign. 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. Thanks and Tri On!

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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

Members (1,593)

Photos (1,435)