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Wisconsin Triathlon Calendar 2025-2026

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Explore the best triathlons in Wisconsin for 2025-2026! Our updated list features 22 exciting races across the region. Find your next race in Wisconsin below and join the running community at these great events!

February 2026
Feb
15
Sunday

Tri Faster Indoor Triathlon

Triathlon
April 2026
Apr
11
Saturday

Stubborn Fool Adventure Race

Multisport
May 2026
May
2
Saturday

Waddling Warriors Adventure Race

Multisport
May
3
Sunday

J-Hawk Earlybird Race Series

Triathlon
June 2026
Jun
7
Sunday

Lake Mills Triathlon

Triathlon
Jun
17
Wednesday

Tri Faster SwimRun

Aquathlon
Jun
27
Saturday

Wisconsin Triterium Triathlon

Triathlon
Jun
27-28
Sa - Su

Stubborn Mule Adventure Race

Multisport
Jun
28
Sunday

Pleasant Prairie Triathlon

Triathlon
Jun
28
Sunday

Duck Creek Triathlon

Triathlon
July 2026
Jul
11
Saturday

Oconto Falls Dri-Tri

Triathlon
Jul
11-12
Sa - Su

Door County Triathlon

Triathlon
Jul
11
Saturday

Pardeeville Triathlon

Triathlon
Jul
19
Sunday

Green Lake Triathlon

Triathlon
Jul
22
Wednesday

Tri Faster SwimRun

Aquathlon
Jul
25
Saturday

Lake Country Triathlon

Triathlon
Jul
26
Sunday

Tri-ing for a Cure Triathlon

Triathlon
Jul - Aug
30-2
Th - Su

C26 Wisconsin Triathlon Camp '26

Triathlon
August 2026
Aug
23
Sunday

Sugar River Triathlon

Triathlon
September 2026
Sep
12
Saturday

IRONMAN 70.3 Wisconsin

Triathlon
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