How many running races are there in Ontario in 2026?

316 races with a confirmed date are listed for Ontario right now, plus 564 that ran last season and haven't announced their next one. The confirmed ones include 10 marathons and 20 half marathons. The calendar updates nightly.

What is the next race in Ontario?

THE GOOD LOOP in Toronto on November 11, 2026.

Which cities in Ontario host the most races?

Toronto (51), Ottawa (19), Hamilton (15) have the busiest race calendars in the province.

Races in Ontario

Ontario's race calendar runs from November 2026 through December 2027: 316 races with a confirmed date (564 more are waiting on a date). Toronto, Ottawa and Hamilton host the most start lines. Beyond the roads, there are 26 trail races and 16 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 February April May June July August 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 (51)Ottawa (19)Hamilton (15)Windsor (10)Burlington (7)London (6)Milton (5)Barrie (5)Guelph (5)Sarnia (5)Waterloo (4)Mississauga (4)

This weekend in Ontario

Across Canada →

November 13, 2026 – November 15, 2026 — 8 races.

When

Confirmed dates only

880 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. Every subscriber is in the monthly $25 gift-card draw, held on the 1st. One click to leave.

Racing in Ontario — FAQ

How many running races are there in Ontario in 2026?: 316 races with a confirmed date are listed for Ontario right now, plus 564 that ran last season and haven't announced their next one. The confirmed ones include 10 marathons and 20 half marathons. The calendar updates nightly.
What is the next race in Ontario?: THE GOOD LOOP in Toronto on November 11, 2026.
Which cities in Ontario host the most races?: Toronto (51), Ottawa (19), Hamilton (15) have the busiest race calendars in the province.