Costa Mesa
Triathlon Calendar near Costa Mesa 2026-2027
Monthly updates for Costa Mesa
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Costa Mesa for 2026-2027! We've gathered 5 exciting races in the area. Check out our detailed list below to find your next local race.
March 2027
Experience an early season triathlon in Long Beach featuring a calm bay swim and scenic oceanfront paths. Choose from a 70.4 mile long course or a sprint distance with individual and relay options.
April 2027
A multi-discipline race day at Lake Mission Viejo featuring Olympic and sprint triathlons, duathlon, aquabike, a 5K and youth races on varied lake and canyon courses.
September 2027
A multisport event at Crystal Cove State Park featuring ocean swim, Pacific Coast Highway bike laps, coastal trail run and a 5K on September 12, 2027.
Ocean swim and beachfront bike in Long Beach California on September 19, 2027 with SuperSprint, Sprint, and Olympic distances and fundraising for Children’s Hospital Los Angeles.
November 2027
A multi-discipline race day at Newport Dunes with 12 sprint and Olympic event options across swim, bike and run formats.
Monthly updates for Costa Mesa
Get new running races (and updates) in your inbox every month.