Iowa
Iowa Triathlon Calendar 2026-2027
Monthly updates for Iowa
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Iowa for 2026-2027! Our updated list features 11 exciting races across the region. Find your next race in Iowa below and join the running community at these great events!
May 2027
Siouxperman Triathlon features an indoor 300 yard swim, a 25K bike and a 5K run with individual and relay entry options.
Multi-discipline event at Lake Manawa Beach on 23 May 2027 featuring sprint and relay triathlons, aquabike, aquathon, open-water swim and a duathlon, with swim, bike and run courses around the lake.
June 2027
Multi-day ultra-triathlon series at Big Creek State Park, Iowa, offering distances from 140.6 to 703 miles plus aquabike and duathlon options.
A multisport day at Pleasant Creek State Park featuring sprint and Olympic triathlons, aquabike, a sprint duathlon and a 1500 m open water swim, with relay teams welcome and chip timing for all races.
Annual community race on the High Trestle Trail with 5K, 10K, duathlon and virtual options; 208 athletes participated in 2026 to support the Boone County Hospital Foundation.
Monthly updates for Iowa
Get new running races (and updates) in your inbox every month.
A multi-discipline event at Ada Hayden Lake on June 27, 2027 featuring triathlon, relay, paratriathlon, aquabike, duathlon and a swim-only race; the event is chip timed and part of the Heart of America Triathlon Series.
July 2027
Adult triathlon in DeWitt, IA on July 17, 2027 with a 500 yard swim in Lake Killdeer, a 15 mile bike route, and a 5 km run finishing at Central DeWitt High School.
August 2027
Twin Lakes Triathlon on August 7, 2027 features sprint and super sprint courses, open to individuals and teams ages 12 to 102 with chip timing.
Triathlon at the Washington YMCA on August 14, 2027 with a 300 yard indoor swim, 13 mile bike on the Kewash Trail and a 5K run through Sunset Park.
Sprint distance triathlon and duathlon in Manchester, IA with a 400 yd swim or 1 mile run, a 16 mile bike and a 5K run; proceeds benefit local emergency services.
October 2027
A navigation-based adventure race in northeast Iowa on October 3, 2026 featuring trekking, biking and paddling for teams or soloists with multiple timed options.