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!

July 2025
Jul
1
Tuesday

Freedom Run 5K - Watertown

2 mi 5 km
Jul
4
Friday

Belle Fourche Rodeo Run

5 km 10 km
Jul
12
Saturday

Lennox Lapsley's Running for Healthy Hearts

13 mi
Jul
12
Saturday

Spearfish Canyon Half Marathon

5 km 13 mi
Jul
12
Saturday

Hy-Vee Mini Triathlon

Triathlon
Jul
12
Saturday

Beef & Eggs 5K

5 km
Jul
13
Sunday

Mystic Mountain Trail Run

Trail Run 8 mi
Jul
19
Saturday

Heart of the Hills

10 mi
Jul
26-27
Sa - Su

Rapid City Marathon & Half Marathon

5 km 13 mi 26 mi
Jul
26
Saturday

Ravine Lake Triathlon

Triathlon
Jul
26
Saturday

Haven Half Marathon, 30k & 10k

Trail Run 10 km 13 mi 30 km
August 2025
Aug
9
Saturday

The Blue Move

5 km
Aug
9
Saturday

605 Trail Fest

Trail Run 4 mi 8 mi
Aug
15-16
Fr - Sa

Lean Horse Ultra

Trail Run 20 mi 30 mi 50 mi 100 mi
Aug
16-17
Sa - Su

Leading Ladies Marathon / Dakota Spirit Marathon

5 km 10 km 13 mi 26 mi
Aug
29-31
Fr - Su

The Blood Run - Lennox, SD

Backyard Ultra 3 hr 6 hr ... 24 hr 36 hr
Aug
30
Saturday

The Southern Hills Triathlon

Triathlon
September 2025
Sep
7
Sunday

Sundance to Spearfish Marathon

26 mi
Sep
13
Saturday

Mount Rushmore Half Marathon

13 mi
Sep
13
Saturday

Calvary Trail Run 8 Miler

Trail Run 4 mi 8 mi
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