Missouri
Missouri Triathlon Calendar 2026-2027
Monthly updates for Missouri
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Missouri for 2026-2027! Our updated list features 12 exciting races across the region. Find your next race in Missouri below and join the running community at these great events!
December 2026
An 8 hour off-road adventure race around St Louis combining paddling, mountain biking and navigation by map and compass with solo and team entry options.
February 2027
April 2027
Off-road triathlon at Table Rock State Park in Branson, MO on Apr 24, 2027, featuring full and sprint distances with Youth Tour qualification and World Championship slots.
May 2027
Multi-distance triathlon and duathlon event in Kansas City offering Olympic, sprint, relay and duathlon formats, scheduled for May 16, 2027.
June 2027
USAT sanctioned triathlon at Creve Coeur Park on June 28, 2026 offering sprint, Olympic, relay and 6K options with an expo and packet pickup the day before.
Monthly updates for Missouri
Get new running races (and updates) in your inbox every month.
Innsbrook Triathlon on June 12, 2027 at Lionshead Beach offers lake swims, rolling bike routes and mixed-surface runs with USAT-sanctioned race formats.
A two-day triathlon in Rogersville, Missouri offering youth and adult distances including supersprint, sprint and Olympic(ish) formats, marking the 40th annual ConcreteMan.
July 2027
USAT sanctioned triathlon in Ballwin featuring a 300 yard swim, 9 mile bike and 3.4 mile run with single, relay, and double formats on July 18, 2027.
Multi-format race in Ozark MO on July 24, 2027 with triathlon, relay triathlon, and duathlon options plus river swim and country bike roads.
August 2027
Multi discipline event at Smithville Lake offering short and long triathlon and duathlon distances, relay and virtual options, with proceeds donated to support military families.
An hourly elimination triathlon in Springfield, MO where athletes repeat a 100 m swim, 5 mi bike and 1.25 mi run each hour until one athlete remains.
September 2027
A USAT‑sanctioned triathlon at 370 Lakeside Park offering distances from a 5K and sprints up to a half triathlon, with a beach swim, country‑road bike courses, and a finish festival.