How many running races are there in Ontario in 2026?

325 races with a confirmed date are listed for Ontario right now, plus 403 that ran last season and haven't announced their next one. The confirmed ones include 14 marathons and 35 half marathons. The calendar updates nightly.

What is the next race in Ontario?

2026 VON Activity Challenge in Mount Brydges on September 26, 2026.

Which cities in Ontario host the most races?

Toronto (42), Hamilton (26), Ottawa (18) have the busiest race calendars in the province.

Races in Ontario

Ontario's race calendar runs from September 2026 through December 2027: 325 races with a confirmed date (403 more are waiting on a date). Toronto, Hamilton and Ottawa host the most start lines. Beyond the roads, there are 47 trail races and 5 triathlons and duathlons on the calendar.

Every listing links to the organizer's official registration page.

5K races 10K races Half marathons Marathons Ultramarathons Trail races Obstacle races (OCR)Triathlons & duathlons

January May June July September October November December

Wondering what these cost? Real entry fees in Ontario →

Southwestern Ontario region Niagara and Hamilton region Eastern Ontario region Waterloo Region and Guelph region Toronto (42)Hamilton (26)Ottawa (18)London (15)Windsor (8)Burlington (8)Guelph (8)Kitchener (5)Vaughan (5)Oakville (5)Kingston (5)Waterloo (4)

This weekend in Ontario

Across Canada →

September 25, 2026 – September 27, 2026 — 44 races.

When

Confirmed dates only

728 races listed

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.

Racing in Ontario — FAQ

How many running races are there in Ontario in 2026?: 325 races with a confirmed date are listed for Ontario right now, plus 403 that ran last season and haven't announced their next one. The confirmed ones include 14 marathons and 35 half marathons. The calendar updates nightly.
What is the next race in Ontario?: 2026 VON Activity Challenge in Mount Brydges on September 26, 2026.
Which cities in Ontario host the most races?: Toronto (42), Hamilton (26), Ottawa (18) have the busiest race calendars in the province.