Monster of Mazinaw Trail Race
Last run September 2026Date TBA
Cloyne, Ontario
No date announced yet — what we know
- Last held Saturday, September 19, 2026 — the third Saturday in September.
- Distances last time 43km, 30km, 10km
- Start Bon Echo Provincial Park, Ontario 41, Cloyne, ON, Canada
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.
About this race
We are proud to announce that this event is sanctioned by Athletics Ontario. We are thrilled to announce that we are partnering with La Sportiva for our events this year. Not only will La Sportiva be at our races with their demo fleet of shoes to try but they will also be giving away 2 pairs of shoes!
— from the organizer's listing, read it in full
Course notes
This race runs annually (last edition: September 19, 2026). The next date hasn't been announced — watch the organizer's page.
Listed via Race Roster. RaceFinder links you to the official page — always confirm date and details with the organizer. Your race? Update or claim this listing free →
Distances last time
- 10k Trail Race
10k of awesome trail running . Honestly, expect the course to be more like 11k.
- 30k Trail Race
30k on the stunning trails of Bon Echo Provincial Park.
- 43k Trail Race
43k on the stunning trails of Bon Echo Provincial Park.
Distances and details from the last edition's listing. Entry fees aren't shown because the next edition hasn't been priced yet.
Where
Directions ↗Bon Echo Provincial Park, Ontario 41, Cloyne, ON, Canada — Bon Echo Provincial Park