Ohio
Ohio Triathlon Calendar 2025-2026
Monthly updates for Ohio
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Ohio for 2025-2026! Our updated list features 12 exciting races across the region. Find your next race in Ohio below and join the running community at these great events!
January 2026
Take on the OSU Indoor Triathlon at RPAC on Jan 25, 2026, a USAT Collegiate Nationals qualifier with indoor swim, stationary bike and track run. Postrace food and race shirts for early registrants make for a fun campus event.
February 2026
Race indoors at Medina Rec Indoor Tri on February 8, 2026 with swim, bike, run options for adults and a youth tri for ages 7 to 15. Fast paced waves and limited spots make this a fun off season challenge for all abilities.
Compete or cheer at the 17th annual Indoor Triathlon and Biathlon at Mandel JCC on Sunday, February 22, 2026, with races for adults, kids and teams. Family friendly event welcomes ages 7 and up and supports The J community programs.
May 2026
Kick off multisport season at the Dooby Du Duathlon in Sylvania with gravel trail runs and a scenic 13.5 mile two loop bike on rural roads. Open to athletes 15 and older, this RunToledo tune up has limited spots.
Join the South Fork Duathlon in Whitehouse, OH on May 27, 2026 at Cycle Werks for a run, bike, run on paved trail and flat country roads. Age group results and burgers after the race create a competitive yet community feel.
June 2026
Join the Whitehouse Multi Sport Festival on June 20, 2026 at Nona France Quarry in Blue Creek Metropark for a sprint triathlon, duathlon or three person super sprint relay. Enjoy a scenic quarry swim, road bike and trail run with a shirt and finisher..
Celebrate multisport season at the Dayton Triathlon and USA Triathlon Ohio State Championships on June 21 at Buck Creek State Park Beach in Springfield Ohio. Enjoy races for all levels, open water swims, youth races and a catered meal.
July 2026
TRILLIUM is a women only triathlon and duathlon at scenic Centennial Quarry in Sylvania, Ohio on July 12, 2026. Choose solo or relay entries and tackle swim bike and run legs for a fun, empowering race day.
Race Lake Erie with a ferry boat swim start, a fast flat 56 mile bike through farmland and a lively 13.1 mile run through spectator lined downtown Sandusky. Highly ranked by athletes for course and overall experience.
August 2026
Take on sprint or Olympic triathlon, duathlon, aquabike or relay at Sylvania's Tam O Shanter Sports Complex and Olander Lake on August 2, 2026. Expect live music on course, lively spectator support, and options for every skill level.
Tri CLE Rock Roll Run at Edgewater Park is a multisport race weekend with triathlon, duathlon and aquabike options across Super Sprint, Sprint and Olympic distances. Swim at Edgewater Beach, bike the Memorial Shoreway for skyline views and finish in..