Demi-Marathon de Thetford
Last run September 2026Date TBA
Thetford Mines, Quebec

No date announced yet — what we know
- Last held Sunday, September 13, 2026 — the second Sunday in September.
- Distances last time 21.1km, 10km, 5km
RaceFinder re-reads the organizer's listing every morning. Nothing on this page is a confirmed 2027 date — the box under this one sends a single email the day one appears.
This race runs annually (last edition: September 13, 2026). The next date hasn't been announced — watch the organizer's page.
Added from the organizer's own page. RaceFinder links you to the official page — always confirm date and details with the organizer. Your race? Update or claim this listing free →
Where
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Races near Thetford Mines
All of Quebec →Within about 75 km — Thetford Mines has no other race on the calendar.
- Date to be announced
Tournée des couleursDate TBA
Saint-Ferdinand, QC · Road · 21km / 10km / 5km / 2.5km
- Sunday, May 30, 2027
Trail des Appalaches
Sainte-Praxède, QC · Trail · 60km / 30km / 15km / 10km
- Date to be announced
Course a la montagneDate TBA
East Broughton, QC · Road · 6.5km / 4.5km / 2.5km / 0.5km
- Date to be announced
St-Ephrem en courseDate TBA
Saint-Éphrem-de-Beauce, QC · Road · 10km / 5km
- Sunday, September 5, 2027
Le DÉFI Lac Aylmer
Beaulac-Garthby, QC · Road · 42.2km / 42km / 21.1km / 10km
- Date to be announced
Défi Santé PlessisvilleDate TBA
Plessisville, QC · Road · 10km / 5km / 2.5km