Races in Ontario
Ontario's race calendar runs from August 2026 through December 2027, with 710 events currently listed. Toronto, Hamilton and Ottawa host the most start lines. Beyond the roads, there are 81 trail races and 68 triathlons and duathlons on the calendar.
Every listing links to the organizer's official registration page.
710 races listed
Kelso MTB Race Series 2026 Race 12
Milton, ON · Cycling
YMCA Strong Kids Duathlon CampbellfordReg closes soon
Trent Hills, ON · Triathlon / duathlon
Great Waterfront Trail Adventure 2026
Windsor, ON · Cycling
2026 Ontario Masters Track & Field Championship
Brampton, ON · Track
Toronto Island - Sat Aug 15 and Sun Aug 16Reg closes soon
Toronto, ON · Triathlon / duathlon · 25km
2026 Gran Fondo Lake Huron
Southampton, ON · Cycling · 10km / 30km / 50km / 75km
Middle Path Trail RaceReg closes soon
Peterborough County, ON · Trail · 2km / 8mi / 26km / 13km
TCS Toronto Waterfront Marathon - Long Run #2Reg closes soon
Toronto, ON · Road running · 15km / 5km
UnLeashed Dog Trail RunReg closes soon
Petawawa, ON · Trail
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
2026 Black Bay Adventure Ride
Petawawa, ON · Cycling
Tim Horton's Night Run 2026Reg closes soon
Windsor, ON · Road running · 5km / 1km
Rising Stars Festival (U8, U10, U12)
Brampton, ON · Track
The ENDURrun 2026Reg closes soon
Conestogo, ON · Road running · 160km
The 2026 ENDURrun Sport 80 KMReg closes soon
Conestogo, ON · Road running · 80km
Dunnville Grand Tour 2026Reg closes soon
Haldimand County, ON · Road running · 160km / 100km
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
Walk/Run for Camp Wendake 2026
London, ON · Road running · 1km / 2km
XTERRA Sleeping Giant - 2026
Thunder Bay, ON · Triathlon / duathlon · 46km / 20km / 11km / 40km
Subaru Triathlon Series - Owen SoundReg closes soon
Owen Sound, ON · Triathlon / duathlon · 41km / 51km
2026 Petawawa TriathlonReg closes soon
Petawawa, ON · Triathlon / duathlon · 25km
TRi KiDS Triathlon Series NIAGARA (PORT COLBORNE), ON
Port Colborne, ON · Triathlon / duathlon
Along the Vines 5k/10k
Essex, ON · Road running · 5km / 10km
HuronRox
Goderich, ON · Road running · 1300m
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
Toronto Hotdog Mile
Toronto, ON · Road running
2026 Flying Angels Ontario Cup
Mississauga, ON · Track
Mapleton Sunflower RunDate TBA
Moorefield, ON · Road running · 2km / 5km / 10km
Toronto Island - Sat Aug 16 and Sun Aug 17Date TBA
Toronto, ON · Triathlon / duathlon · 25km
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
Wildfire Track Aug-Oct
Toronto, ON · Track
CTCK Cornhole Tourney @ Sons
Chatham, ON · Road running
YMCA Strong Kids Duathlon Cobourg
Cobourg, ON · Triathlon / duathlon
The Last Hour
Thomasburg, ON · Road running · 8km
PUMA Toronto Women's Summer 10K/5K
Toronto, ON · Road running · 10km / 5km