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Wisconsin Triathlon Calendar 2025-2026

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Monthly updates for Wisconsin

Get new running races (and updates) in your inbox every month.

Explore the best triathlons in Wisconsin for 2025-2026! Our updated list features 24 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
Su

Tri Faster Indoor Triathlon

Triathlon
April 2026
Apr
11
Sa

Stubborn Fool Adventure Race

Multisport
May 2026
May
2
Sa

Waddling Warriors Adventure Race

Multisport
May
3
Su

J-Hawk Earlybird Race Series

Triathlon
May
16
Sa

White Deer Triathlon

Triathlon
June 2026
Jun
7
Su

Lake Mills Triathlon

Triathlon
Jun
17
We

Tri Faster SwimRun

Aquathlon
Jun
27
Sa

Wisconsin Triterium Triathlon

Triathlon
Jun
27-28
Sa - Su

Stubborn Mule Adventure Race

Multisport
Jun
28
Su

Pleasant Prairie Triathlon

Triathlon
Jun
28
Su

Duck Creek Triathlon

Triathlon
July 2026
Jul
11
Sa

Oconto Falls Dri-Tri

Triathlon
Jul
11-12
Sa - Su

Door County Triathlon

Triathlon
Jul
11
Sa

Pardeeville Triathlon

Triathlon
Jul
19
Su

Green Lake Triathlon

Triathlon
Jul
22
We

Tri Faster SwimRun

Aquathlon
Jul
25
Sa

Lake Country Triathlon

Triathlon
Jul
25
Sa

Tricky Trout Paddle Triathlon

Triathlon
Jul
26
Su

Tri-ing for a Cure Triathlon

Triathlon
Jul-Aug
30-2
Th - Su

C26 Wisconsin Triathlon Camp '26

Triathlon