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Races in December 2026 in Ontario

24 races with a confirmed date in December 2026 across Ontario — the biggest group is 5K races (11). The busiest day is Saturday, December 5, 2026 with 10 races. Every listing links to the organizer's official registration page.

← NovemberJanuary →Santa Runs & Christmas RacesDecember across Canada

The big ones in December

Multi-distance race weekends — the ones worth planning around.

What December is made of

5K races · 1110K races · 4Half marathons · 2Marathons · 2

Where they are

Toronto · 6Hamilton · 4Guelph · 2Markham · 2London · 1Mount Hope · 1Niagara-on-the-Lake · 1Orangeville · 1Ottawa · 1Sudbury · 1Vaughan · 1Whitby · 1

Every race in December

When

24 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.

Other months

October 2026November 2026January 2027February 2027March 2027

Races in December 2026 — FAQ

How many races are there in December 2026 in Ontario?
24 with a confirmed date, and the biggest group is 5K races with 11. The busiest single day is Saturday, December 5, 2026, with 10 races. Recompiled nightly from the organizers' own calendars, so the number moves as races are announced.
When should I register for a December race?
Most Canadian races take entries until race week — what expires first is the price tier, not the spot. Check the fee window on the race's page before you wait.
Do I sign up here?
No. Every listing links straight to the organizer's own registration page. RaceFinder never takes signups or a cut.

Planning further out? Build a season, see when race season peaks in Canada, or check which entry fees go up next.