Obstacle races (OCR) in Ontario
8 upcoming obstacle races (ocr) across Ontario, with the deepest fields in Ottawa, Uxbridge, The Blue Mountains. Next up: The 5K Foam Fest - Ottawa on August 22, 2026.
Updated daily — every listing links to the organizer's official registration page.
8 races listed
The 5K Foam Fest - Ottawa
Ottawa, ON · Obstacle (OCR) · 5km
The 5K Foam Fest - Toronto, ON
Uxbridge, ON · Obstacle (OCR) · 5km
Spartan Race Blue Mountain Trifecta Weekend
The Blue Mountains, ON · Obstacle (OCR) · 5km / 10km / 21km
Race into the Harvest: 5K Obstacle Course by Mastronardi Winery
Kingsville, ON · Obstacle (OCR) · 5km
The 5K Foam Fest - Kitchener, ON
Kitchener, ON · Obstacle (OCR) · 5km
The 5K Foam Fest - London, ON
London, ON · Obstacle (OCR) · 5km
Mud Hero TorontoDate TBA
Whitchurch-Stouffville, ON · Obstacle (OCR) · 6km / 10km / 5km / 1km
Mud Hero OttawaDate TBA
Ottawa, ON · Obstacle (OCR) · 6km / 5km / 1km / 10km