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Triathlon in Ontario 2025 - 2026

The most comprehensive list of Ontario Triathlon Events in 2025 - 2026. Discover 100's of US Ontario Triathlon. Find your perfect race here!

Triathlon Ontario 2025 - 2026

Okanagan Triathlon Training Camp

Swansea, BC
08 May 25

TRi KiDS Triathlon Series LONDON, ON

London, ON
25 May 25
$66.51 - $76.32

Subaru Triathlon Series - Milton

Milton, ON
01 Jun 25
Free - $187.42

Gravenhurst - Sat June 7 and Sun Jun 8

Gravenhurst, ON
07 Jun 25
$165.85 - $198.15

TRi KiDS Triathlon Series BURLINGTON, ON

Burlington, ON
08 Jun 25

LPC Guelph Triathlon Clinic

Guelph, ON
08 Jun 25
$56.20

Subaru Triathlon Series - Guelph Lake 1

Guelph, ON
14 Jun 25
Free - $209.21

Rose City (Welland) - Sat June 21 and Sun June 22

Welland, ON
21 Jun 25
Free - $176.62

Lil’ Bones Triathlon

Brantford, ON
22 Jun 25
$77.77

2025 - The PureKids Triathlon Series, Powered by Subway

Leamington, ON
29 Jun 25
$66.98

Bracebridge - Sat July 12 and Sun July 13

Bracebridge, ON
12 Jul 25
Free - $176.62

PureKids Triathlon Series Powered by Subway

Windsor, ON
13 Jul 25
$56.20

Bluewater Triathlon and Duathlon - 2025

Sarnia, ON
19 Jul 25
$13.14 - $127.51

Lakeshore Women's Triathlon

Port Elgin, ON
19 Jul 25
$93.96

Subaru Triathlon Series - Owen Sound

Owen Sound, ON
20 Jul 25
Free - $209.21

K-Town (Kingston) - Sun July 20

Kingston, ON
20 Jul 25
Free - $204.61

Ironkid Triathlon 2025

Sarnia, ON
20 Jul 25

Cornwall Multisport Club - Open Water Swim 2025

Cornwall, ON
25 Jul 25
$10.00

Toronto Triathlon Festival

Toronto, ON
27 Jul 25

Subaru Triathlon Series - Niagara

Grimsby, ON
09 Aug 25
Free - $187.42

Barrie - Sat Aug 9 and Sun Aug 10

Barrie, ON
09 Aug 25
Free - $165.85

Beaton Classic 2025

Greater Sudbury, ON
10 Aug 25
$18.44 - $131.73

Toronto Island - Sat Aug 16 and Sun Aug 17

Toronto, ON
16 Aug 25
Free - $165.85

TRi KiDS Triathlon Series NIAGARA (PORT COLBORNE), ON

Port Colborne, ON
17 Aug 25
$66.51 - $76.32

Wasaga Beach - Sat Aug 23

Wasaga Beach, ON
23 Aug 25
Free - $176.62

2025 Cornwall Youth Triathlon

Cornwall, ON
23 Aug 25
$35.00 - $45.00

2025 Cornwall Triathlon - Adult Day

Cornwall, ON
24 Aug 25
$35.00 - $600.00

Subaru Women's Triathlon Festival

Grimsby, ON
24 Aug 25
Free - $165.64

Subaru Triathlon Series - Guelph Lake 2

Guelph, ON
30 Aug 25
Free - $187.42

TRi KiDS Triathlon Series MILTON, ON

Milton, ON
31 Aug 25

Lakeside - Sat Sept 6 and Sun Sept 7

Lakeside, ON
06 Sep 25
Free - $183.08

Cornwall Multisport Club - Fall Duathlon 2025

Long Sault, ON
13 Sep 25
Free

Barrelman Niagara Falls

Welland, ON
14 Sep 25
Free - $492.41
Showing 1-33 of 33 results