South Dakota Triathlon Calendar 2025-2026

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Explore the best triathlons in South Dakota for 2025-2026! Our updated list features 33 exciting races across the region. Find your next race in South Dakota below and join the running community at these great events!

September 2025
Sep
17-20
We - Sa

Black Hills Veteran March and Marathon

16 mi 26 mi 110 mi
Sep
20
Saturday

Jack 15 Road Race

3 mi 5 mi 7 mi 15 mi
Sep
20
Saturday

The Race to End It Dell Rapids

5 km 10 km
Sep
21
Sunday

Sioux Falls Marathon

5 km 13 mi 26 mi
Sep
27
Saturday

Great Bear Trail Races

Trail Run 3 mi 6 mi
October 2025
Oct
5
Sunday

Run Crazy Horse

13 mi 26 mi
Oct
5
Sunday

Palace City Kiwanis Half Marathon

5 km 10 km 13 mi
Oct
11
Saturday

Newton Hills Trail Race

Trail Run 2 mi 6 mi
Oct
25
Saturday

Trick or Treat Trail Run 10K

Trail Run 5 km 10 km
November 2025
Nov
1
Saturday

Glacier Hills Ultra 50k

Trail Run 20 km 30 km 50 km
Nov
22
Saturday

Gobble Wobble 10k - Sioux Falls

10 km
April 2026
Apr
25
Saturday

River Rat Run

5 km 10 km 13 mi
May 2026
May
2
Saturday

Tuthell 50K

Trail Run 50 km
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