South Dakota
South Dakota Triathlon Calendar 2026-2027
Monthly updates for South Dakota
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Explore the best triathlons in South Dakota for 2026-2027! Our updated list features 2 exciting races across the region. Find your next race in South Dakota below and join the running community at these great events!
September 2026
A multi-category triathlon at Angostura Recreation Area featuring a sandy beach swim, rolling bike course, lakeside run, finisher medals, and awards.
Triathlon in Custer State Park with 70.3, Olympic and sprint options, open water swim at Stockade Lake and bike and run courses through the Black Hills.
Monthly updates for South Dakota
Get new running races (and updates) in your inbox every month.