Washington
Washington Triathlon Calendar 2026-2027
Monthly updates for Washington
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Washington for 2026-2027! Our updated list features 12 exciting races across the region. Find your next race in Washington below and join the running community at these great events!
October 2026
Pumpkin Man in Sammamish pairs a hilly 10 mile road bike and a 5 mile technical trail run on October 31, 2026, with technical long sleeve shirts and finisher medals.
May 2027
Multi-event day at Vancouver Lake Regional Park with a duathlon (5K, 12.91 mile bike, 5K), plus a half marathon, 10K and 5K; parking included.
June 2027
Triathlon, duathlon and running events at Lake Wilderness Park featuring lake swims, rolling bike routes and trails along the Cedar River.
USAT sanctioned Half Iron triathlon in Vantage with a 1.2 mile swim, 56 mile bike and 13.1 mile run plus relay and virtual options.
A set of triathlon, duathlon, team relay, and 5K races at Waterfront Park in Medical Lake, WA, featuring an out-and-back open water swim and paved road and trail bike and run courses.
Monthly updates for Washington
Get new running races (and updates) in your inbox every month.
Seattle Solstice Run at Magnuson Park on June 19, 2027 offers 5k, 10k, 15k, a Kids Dash and a duathlon on a USATF certified 5k loop.
City-run, chip-timed triathlon at Lake Padden Park offering two distances with mapped bike and run routes, swim triangles, and clear race rules.
July 2027
A summer weekend triathlon festival on the Columbia River featuring sprint and Olympic triathlons, duathlons, AquaBike, sunset 5K and kids races.
An all women triathlon and fitness festival on July 11, 2027 at Frenchman's Bar Regional Park in Vancouver WA featuring sprint multisport races, relays and a 5k.
USAT sanctioned triathlon at Wildcat Lake near Bremerton with solo and relay distances, race packet items, and one day USAT membership options.
August 2027
A Beaver Lake triathlon featuring a 1/4 mile swim, a 13.4 mile bike on Duthie Hill, and a 4.3 mile run around the lake with USAT membership required.
September 2027
Experience a USAT sanctioned sprint triathlon in Bellevue featuring a swim in Lake Washington and a scenic bike ride along the EASTRAIL trail.