Saint Charles close

Triathlon Calendar near Saint Charles 2026-2027

Header image

Explore the top triathlons near Saint Charles for 2026-2027! We've gathered 4 exciting races in the area. Check out our detailed list below to find your next local race.

December 2026
Dec
5
Sa

Castlewood Adventure Race

Multisport 8 HOUR ADVENTURE RACE - S... 5 15 5 mi 8 HOUR ADVENTURE RACE - 2... 5 15 5 mi 8 HOUR ADVENTURE RACE - 3... 5 15 5 mi 8 HOUR ADVENTURE RACE - 4... 5 15 5 mi
An 8 hour off road navigation race around St. Louis combining canoeing, mountain biking and trekking with solo and team divisions.
June 2027
Jun
1
Tu

St. Louis Triathlon

Triathlon Duathlon Aquathlon Sprint 750 m 5 km Olympic 1 mi 10 km Sprint 750 m 20 km Sprint 750 m 20 5 km
Experience Missouri’s premier multi-sport showdown at Creve Coeur Park with triathlon, duathlon, and aquathlon races for all athletes including a USAT State Championship.
July 2027
Jul
1
Th

Ballwin Triathlon

Triathlon Sprint 300 m 9 3.4 mi Ballwin Double 300 m 9 3.4 mi 1 m 9 3.4 mi
A USAT sanctioned pool triathlon in Ballwin on July 19, 2026 with 300 yard swim, 9 mile bike and 3.4 mile run plus single, relay and double options.
September 2027
Sep
12
Su

370 Lakeside Triathlon

Triathlon Duathlon Aquathlon Sprint 750 m 5 km Olympic 1.5 10 km Middle distance 1.2 13.1 mi Sprint 750 m 23 km
Experience a USAT sanctioned triathlon at 370 Lakeside Park featuring a beach start, scenic rural bike course, and flat trail run with distances from 5K to Half Triathlon.
Monthly updates for Saint Charles

Get new running races (and updates) in your inbox every month.
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.