5K races in Ontario
401 upcoming 5k races across Ontario, with the deepest fields in Toronto, Hamilton, Ottawa. Next up: TCS Toronto Waterfront Marathon - Long Run #2 on August 15, 2026.
Updated daily — every listing links to the organizer's official registration page.
401 races listed
TCS Toronto Waterfront Marathon - Long Run #2Reg closes soon
Toronto, ON · Road running · 15km / 5km
OTF Whitby 5k Run/WalkReg closes soon
Whitby, ON · Road running · 5km / 1km
Steps for Change: #EndOverdoseReg closes soon
Stayner, ON · Road running · 1km / 5km / 10km
Tim Horton's Night Run 2026Reg closes soon
Windsor, ON · Road running · 5km / 1km
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
A Run for Chris 2026Reg closes soon
Hamilton, ON · Road running · 5km
Smiles for MilesReg closes soon
Chatham, ON · Road running · 5km
Mapleton Sunflower RunDate TBA
Moorefield, ON · Road running · 2km / 5km / 10km
Friends of Fortis/ dance Immersion 5k Walk/ RunDate TBA
Brampton, ON · Road running · 5km
Mudskipper Canadian Individual SwimRun Championships and Parry Sound 15K Ultra SwimDate TBA
Parry Sound, ON · Trail · 27km / 13km / 15km / 7km
PUMA Toronto Women's Summer 10K/5K
Toronto, ON · Road running · 10km / 5km
The 5K Foam Fest - Ottawa
Ottawa, ON · Road running · 5km
Achilles International Canada Hope & Possibility®
Toronto, ON · Road running · 5km
Friday Fun RunDate TBA
Brantford, ON · Trail · 5km / 1km
dowhnill dash 5km
Hamilton, ON · Road running · 5km / 1km
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
Summer Sunset Series
Hamilton, ON · Road running · 1km / 5km
SUMMER NIGHT 5K
London, ON · Road running · 5km / 2km / 250m
The 5K Foam Fest - Toronto, ON
Uxbridge, ON · Road running · 5km
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
2026 North of 7 Challenge
Cloyne, ON · Road running · 1km / 3km
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
2026 5 Peaks Trail Running Series: Albion Hills
Caledon, ON · Trail · 3km / 1km
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
Jordan's Run the Runway 5K Series: Chatham-Kent
Merlin, ON · Road running · 5km / 1km