South Dakota Triathlon Calendar 2025-2026

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Explore the best triathlons in South Dakota for 2025-2026! Our updated list features 35 exciting races across the region. Find your next race in South Dakota below and join the running community at these great events!

June 2025
Jun
14
Saturday

Rattler 5 Miler

Trail Run 5 mi
Jun
14
Saturday

Tiger Trot - Harrisburg

5 km
Jun
14
Saturday

Run with the Govs

3 mi
Jun
27-28
Fr - Sa

Black Hills 100 - Sturgis, SD

Trail Run 30 km 50 km 50 mi 100 mi
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
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
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