10K races in Ontario
236 upcoming 10k races across Ontario, with the deepest fields in Toronto, Hamilton, London. Next up: Steps for Change: #EndOverdose on August 15, 2026.
Updated daily — every listing links to the organizer's official registration page.
236 races listed
Steps for Change: #EndOverdoseReg closes soon
Stayner, ON · Road running · 1km / 5km / 10km
Roots and Rocks Trail RunReg closes soon
Greater Sudbury, ON · Trail · 3km / 5km / 10km / 21km
Mudskipper Canadian SwimRun Championships - Milton and the Milton Open Water SwimReg closes soon
Milton, ON · Trail · 10km / 20km / 1500m / 3km
Along the Vines 5k/10k
Essex, ON · Road running · 5km / 10km
The Wooly Bully RacesReg closes soon
Stella, ON · Road running · 1km / 5km / 10km
Mapleton Sunflower RunDate TBA
Moorefield, ON · Road running · 2km / 5km / 10km
Mudskipper Canadian Individual SwimRun Championships and Parry Sound 15K Ultra SwimDate TBA
Parry Sound, ON · Trail · 27km / 13km / 15km / 7km
The Last Hour
Thomasburg, ON · Road running · 8km
PUMA Toronto Women's Summer 10K/5K
Toronto, ON · Road running · 10km / 5km
Apex ONEWAYDate TBA
Greater Sudbury, ON · Road running · 1km / 6km / 12km / 3km
Sioux Narrows Steelman and Open Water Swim FestivalDate TBA
Kenora District, ON · Swim · 184km / 102km / 3km / 8km
Caffeine Run Toronto (Hamilton)
Hamilton, ON · Road running · 5km / 10km / 21km
SuperPower 2026 - Toronto
Toronto, ON · Road running · 5km / 10km / 15km
24 Hour To Empower Running Challenge
Barrie, ON · Road running · 5km / 10km / 15km / 20km
The Runway 2026
Breslau, ON · Road running · 2mi / 5mi / 200m
Caffeine Run London
London, ON · Road running · 5km / 10km / 21km
South Huron Trail Run
Exeter, ON · Trail · 3km / 8km
Welland Canal Open Water Swim
Welland, ON · Trail · 1km / 2km / 5km / 15km
PSP Southwestern Ontario Virtual Race 2/ Course virtuelle PSP du sud-ouest de l'Ontario 2Date TBA
Hamilton, ON · Road running · 5km / 10km / 15km
Save the Bees Virtual RunDate TBA
Toronto, ON · Road running · 1mi / 5km / 10km / 21km
Summer Shores 5K/8KDate TBA
Hamilton, ON · Road running · 5km / 1km / 8km
Douro DoingsDate TBA
Douro, ON · Road running · 10km / 5km
Run for Ottawa 2026
Ottawa, ON · Road running · 5km / 1km / 3km / 10km
Island Lake Classic 2026
Orangeville, ON · Road running · 10km / 5km
Summer Shores 1K/5K/8K
Hamilton, ON · Road running · 5km / 1km / 8km
Haliburton Forest Trail Race 2026
Haliburton, ON · Trail · 100mi / 50mi / 26km / 50km
North Bay Road Race 2026
North Bay, ON · Road running · 5km / 10km / 21km / 1mi
Oasis ZooRun Toronto 2026
Toronto, ON · Road running · 10km / 5km / 1km
Maggie's Run
London, ON · Road running · 5km / 10km / 2km
Georgina Marathon & Half-Marathon
Jacksons Point, ON · Road running · 42km / 10km / 21km / 5km
Don Doan Dash 2026
Brampton, ON · Road running · 5km / 10km
Run for London 2026
London, ON · Road running · 10km / 5km / 3km
Toronto Island Run 2026
Toronto, ON · Road running · 10km / 5km / 1mi / 1km
Crazy 8km
Hamilton, ON · Road running · 8km
The Cider Run
Uxbridge, ON · Road running · 1km / 3km / 8km / 16km
Trail and Ale 2026
Sarnia, ON · Trail · 10km / 5km / 15km
Kitchener Kids with Cancer 2026
Kitchener, ON · Road running · 10km / 5km
Journey for Change 2026
Aylmer, ON · Road running · 12km / 24km / 34km / 5km
Monster of Mazinaw Trail Race 2026
Cloyne, ON · Trail · 10km / 30km / 43km
2026 KINCARDINE 7K TRAIL CHALLENGE #7
Kincardine, ON · Trail · 7km