Sat May 20, 2023 Walla Walla, WA 99362 US Directions

Race Website

Additional race information can be found at


Bennington Lake
3211 Reservoir Rd
Walla Walla, WA US 99362


Onionman is a grass roots, affordable, low key event in beautiful Walla Walla meant to be accessible to all triathletes. This race is for beginners looking to gain experience to elite athletes looking for a competitive, challenging race. Onionman is also open to team competitors. We wish all of you a safe race and encourage you to get out there and swim hard, ride strong, run fast and most of all, enjoy yourselves!

In order to receive a race swag T-Shirt - participants must register no later than March 15, 2023. Registrations after March 15 will not be guaranteed a T- Shirt choice size.

* The race will have a 300 participant cap! Register early *

NEW DATE: The 29th Annual Onion Man Triathlon will be held on SATURDAY, May 20, 2023. The Olympic Distance race held at the base of the Blue Mountains is a 1.5K lake swim, 40K rolling bike, and 10k honest run. 

BIKE COURSE:  We will be returning to the 2022 bike course: Five Mile hill, down Russell Creek Road and back with a short out and back extension on Scenic Loop Road, and back to Bennigton Lake.

Registration includes a meal ticket to the post race meal (Graze Sandwiches) and Onionman merchandise.  No day of race registration and no wait list available if race fills. No refunds and no deferrals.

Onionman Triathlon race is a USA Triathlon Sanctioned event, if you are a USAT member you will need to enter your number on the registration page. If you are not a member you will need to click on one day license for $15.00. Here is the link if you would like to purchase a one year membership, but you will need to wait for your license number.  If you are a USAT member be ready to show your valid Membership Card at packet pick up. Everyone will need to show picture ID as well. Thank you


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