Mattawa, ON, Canada · Saturday, September 26, 2026
Run Off-the-Grid 50k
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, September
Regional 2001-2020 average for September — NASA POWER, grid elevation 318 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 19 | Nick Allen · 05:44:36 | Heleen De Necker · 06:11:13 |
| 2024 | 50km | 19 | Jordan Chew · 05:10:21 | Valerie Robb · 05:32:49 |
| 2023 | 50km | 11 | Paul Chisholm · 05:49:52 | Victoria Tuttle · 05:52:26 |
| 2022 | 50km | 11 | Rafael Bethencourt Guimera · 04:39:27 | Erin Ackles-Pennington · 08:46:50 |
| 2021 | 50km | 22 | Gregory Pigeon · 04:50:13 | Danica Metcalfe · 06:53:29 |
| 2020 | 50km | 20 | Ryan Niclasen · 05:06:24 | Paula Morley · 06:24:22 |
| 2019 | 50km | 23 | Jean-Sebastien St-Pierre · 05:30:10 | Jacqueline Vande Leygraaf · 06:00:23 |
| 2018 | 50km | 13 | Jeffrey Paul · 04:56:40 | Erin Deveber · 05:34:06 |
| 2017 | 50km | 11 | Jean-Sebastien St-Pierre · 05:05:46 | Helen Francis · 06:36:18 |
| 2015 | 50km | 19 | Nikolay Ryabkov · 05:11:31 | Tanya Columbus · 06:26:20 |
The field has held steady: 19 in 2024, 19 in 2025. 32% of the 2025 field were women.
DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail.
- Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 50 km, without the bounce.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.