Half marathons in St Thomas
1 upcoming in St Thomas, and 4 more within 100km. Every one links to the organizer's official registration page.
Within 100km of St Thomas
Sorted by how far you would have to drive.
- 23 km
Caffeine Run London
London, ON · Road · 5km / 10km / 21km · starts 7:30 a.m.
- 23 km
Springbank Road Races London
London, ON · Road · 21km / 5km / 250m / 2km · starts 8:30 a.m.
- 33 km
Défi Coureur des Bois
Strathroy-Caradoc, ON · Trail · 20km / 10km / 6km / 3km
- 91 km
Habitat for Humanity Chatham-Kent River Run
Chatham, ON · Road · 5km / 10km / 21km · starts 8 a.m.
Half marathons in St Thomas — FAQ
- How many half marathons are there in St Thomas?
- 1 upcoming, and 4 more within 100km if you are willing to drive. The next one is Railway City Road Races 2026 Live Run on Sunday, September 27, 2026. Rebuilt from the race calendar daily.
- When is the next half marathon in St Thomas?
- Railway City Road Races 2026 Live Run, Sunday, September 27, 2026. Open it for the start time, distances and the official registration link.
- Do I register here?
- No. Every listing links straight to the organizer's own registration page. RaceFinder never takes signups or a cut.
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