10K races in Ontario
10K races across Ontario: 94 with a confirmed date (132 more are waiting on a date). Hamilton, Toronto and Ottawa have the most. Next up: 10th Annual UMEI Lightning Bolt on September 26, 2026.
Updated daily — every listing links to the organizer's official registration page.
When
226 races listed
- Saturday, September 26, 2026
10th Annual UMEI Lightning Bolt
Essex County, ON · Road running · 5km / 10km / 1km / 400m · from 72
- Saturday, September 26, 2026
Community RUNning/Course commUNITÉ 2026Reg closes soon
Alexandria, ON · Road running · 1km / 2km / 5km / 10km · from 8
- Saturday, September 26, 2026
The Howling Ghost Trail Race
Aylmer, ON · Trail · 8km / 16km / 24km · from 65
- Saturday, September 26, 2026
2026 Light up the Night for Noelle
Sarnia, ON · Road running · 5km / 1km / 10km · from 56
- Sunday, September 27, 2026
Big Little Run 2026
Guelph, ON · Road running · 5km / 10km / 21km · from 45
- Sunday, September 27, 2026
Railway City Road Races 2026 Live Run
St Thomas, ON · Road running · 5km / 10km / 21km / 1km · from 29
- Sunday, September 27, 2026
Run4Health 2026
Walkerton, ON · Road running · 1km / 5km / 10km / 21km · from 62
- Sunday, September 27, 2026
Willibald Pasture Dash
Ayr, ON · Road running · 5km / 10km · from 35
- Date to be announced
ELEVATE, Blue Mountain - Trail Elevation ChallengeDate TBA
Grey County, ON · Trail · 5km / 10km / 1km / 2km
- Sunday, September 27, 2026
Albion Ascent Trail Race
Hamilton, ON · Trail · 21km / 10km / 5km
New races in Ontario, once a month
Newly listed races, and the registrations closing in the next three weeks. One email a month, one click to leave.
- Date to be announced
Our Hospital Walk/RunDate TBA
North Bay, ON · Road running · 1mi / 5km / 10km
- Saturday, October 3, 2026
The Talon Trail RaceReg closes soon
Parkhill, ON · Trail · 26km / 11km / 7km / 3km · from 46
- Saturday, October 3, 2026
PUMA Toronto Women's Fall 8K/5K
Toronto, ON · Road running · 8km / 5km
- Saturday, October 3, 2026
West Rouge Sports & Recreation Association Fun Run - 2026Reg closes soon
Toronto, ON · Road running · 10km / 5km · from 51
- Saturday, October 3, 2026
UpRiver Running Fall Races
Thunder Bay, ON · Trail · 50km / 25km / 10km
- Sunday, October 4, 2026
Bimbo Global RaceReg closes soonPrice rises soon
Toronto, ON · Road running · 10km / 5km / 3km · from 25
- Sunday, October 4, 2026
Run The CavesPrice rises soon
Warsaw, ON · Trail · 5km / 1km / 10km / 15km · from 45
- Sunday, October 4, 2026
Oakville 21.1Reg closes soon
Oakville, ON · Road running · 21km / 10km / 5km · from 70
- Sunday, October 4, 2026
The Hustle at PinehurstReg closes soon
Ayr, ON · Trail · 12km / 25km / 50km · from 130
- Sunday, October 4, 2026
Miles for Mental HealthPrice rises soon
South Stormont, ON · Road running · 5km / 10km · from 51
- Sunday, October 4, 2026
Collingwood 10kReg closes soonPrice rises soon
Collingwood, ON · Road running · 10km / 1km / 5km · from 72
- Sunday, October 4, 2026
Run for the Frontline
Sarnia, ON · Road running · 1km / 5km / 10km · from 40
- Date to be announced
Race to End HomelessnessDate TBA
Ottawa, ON · Road running · 5km / 10km / 1km
- Date to be announced
Run The CavesDate TBA
Peterborough, ON · Trail · 1km / 5km / 10km / 15km
- Saturday, October 10, 2026
9runrun - Kingston
Kingston, ON · Road running · 5km / 2km / 10km · from 51
- Saturday, October 10, 2026
Sticks n' Stones Trail Race 2026Reg closes soon
Hamilton, ON · Trail · 5km / 10km / 26km / 53km · from 73
- Saturday, October 10, 2026
Thornbury Turkey Trot 2026
Thornbury, ON · Road running · 21km / 10km / 5km / 1km · from 72
- Saturday, October 10, 2026
5k/10k Run/Walk for Justice....Honouring Flight PS752 Victims
Newmarket, ON · Road running · 5km / 10km · from 35
- Saturday, October 10, 2026
Fenelon Falls Turkey Trot Trail Race & Family Fun Run
Kawartha Lakes, ON · Trail · 1km / 5km / 10km · from 35
- Sunday, October 11, 2026
The Maple Leaf March -- La Marche Maple Leaf
Ottawa, ON · Walk · 5km / 10km / 21km / 42km · from 40
- Sunday, October 11, 2026
Run for Resilience 2026
London, ON · Road running · 1km / 5km / 10km · from 40
- Sunday, October 11, 2026
Turkey Gobbler Trail Run 2026
Sudbury, ON · Trail · 8km / 1km / 3km · from 36
- Saturday, October 17, 2026
Wise Raven Trail Race
Waterloo, ON · Trail · 5km / 10km / 25km / 50km · from 56
- Saturday, October 17, 2026
Long Sault Trail Race & Ultra
Bowmanville, ON · Trail · 7km / 14km / 21km / 2km · from 95
- Saturday, October 17, 2026
9runrun - Ottawa
Ottawa, ON · Road running · 5km / 10km / 2km / 21km · from 30
- Saturday, October 17, 2026
Nottawasaga Fall Classic 2026
Wasaga Beach, ON · Road running · 10km / 20km · from 45
- Sunday, October 18, 2026
Pinery Fall Classic 2026
Grand Bend, ON · Road running · 2km / 4km / 5km / 10km · from 45
- Sunday, October 18, 2026
Art In Motion 10K/5K/2K Charity Run & Family Walk
Vaughan, ON · Road running · 10km / 5km / 2km · from 82
- Sunday, October 18, 2026
Ecotay 6K and 10K
Perth, ON · Road running · 6km / 10km
- Date to be announced
HEAD FOR THE HILLS TRAIL RACEDate TBA
St. Catharines, ON · Trail · 1km / 5km / 10km
10K races in Ontario — FAQ
- How many 10K races are there in Ontario in 2026?
- 10K races listed for Ontario right now: 94 with a confirmed date, plus 132 that ran last season and haven't announced their next one. The list refreshes nightly as organizers announce new dates.
- What is the next 10K race in Ontario?
- 10th Annual UMEI Lightning Bolt in Essex County on September 26, 2026.
- Which Ontario cities host the most 10K races?
- Hamilton (11), Toronto (11), Ottawa (6).