Ontario, Canada · October
October Races in Ontario, Canada
Find races in Ontario, Canada taking place in October. Compare dates, locations, distances and registration information. Explore 7 race with a confirmed dates.
- Upcoming, date confirmed
- 7
- Active listings
- 84
Nearby months
Browse Ontario races by distance
Races in nearby provinces and territories
Guides from the RaceRove blog
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- Blog All guides Planning advice for finding, choosing and travelling to races.
October Races in Ontario, Canada: common questions
- How many races are there in Ontario, Canada in October?
- RaceRove currently lists 7 upcoming races in Ontario, Canada in October with a confirmed date, plus 77 annual events usually held that month whose next date hasn't been announced yet.
- What is the biggest race in Ontario, Canada in October?
- By estimated field size, the largest event is the The County Marathon, with about 1,600 runners across all of its distances.
Search every race in Ontario, Canada
Filter by month, distance, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.