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Triathlon Calendar Ontario 2025-2026

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Explore the best triathlons in Ontario for 2025-2026! Our updated list features 17 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

February 2025
Feb
1
Saturday

Winterlude Triathlon

Triathlon
May 2025
May
17
Saturday

Early Bird Triathlon & Run

Triathlon
June 2025
Jun
7-8
Sa - Su

Gravenhurst

Triathlon
Jun
21-22
Sa - Su

Rose City

Triathlon
July 2025
Jul
6
Sunday

IRONMAN 70.3 Muskoka

Triathlon
Jul
12-13
Sa - Su

Bracebridge

Triathlon
Jul
19-20
Sa - Su

Bluewater Triathlon

Triathlon
Jul
20
Sunday

K-Town

Triathlon
August 2025
Aug
3
Sunday

IRONMAN Canada-Ottawa

Triathlon
Aug
9-10
Sa - Su

Barrie

Triathlon
Aug
10
Sunday

Thousand Islands Triathlon & Runs

Triathlon
Aug
16-17
Sa - Su

Toronto Island Race

Triathlon
Aug
23
Saturday

Wasaga Beach

Triathlon
Aug
30
Saturday

The Canadian Triathlon & Run

Triathlon
September 2025
Sep
6
Saturday

Camp Tri

Triathlon
Sep
6-7
Sa - Su

Lakeside

Triathlon
Sep
14
Sunday

Barrelman Niagara Falls

Triathlon
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