Selkirk Slacker 12hr Ultra Trail

Race completed

not publishedn/a Distance

not publishedn/a Climbing

not publishedn/a Grit

We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.

51.3000° N, 116.9689° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~20 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, May

Daytime high 7°C

Night low -1°C

Rainfall Mostly dry

Daylight 15 h 55 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 1874 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	12h	20	Thomas Jefferson · 172.360 km	Mandi Goudie · 152.083 km
2025	12h	17	Jason Minski · 159.131 km	Mandi Goudie · 159.131 km
2024	12h	14	Thomas Jefferson · 173.809 km	Mandi Goudie · 135.184 km

The field grew 18% between 2025 (17) and 2026 (20). 60% of the 2026 field were women.

DUV results for the 2026 edition (12h) — ranked runners 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

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for this trail race.

Trail Running Shoes Cushioning on trail that is still there in the last quarter.
Race Nutrition Self-supported fuelling between aid stations.
Hydration Vests Flask capacity without the bounce.
Headlamps A 12 h limit puts you out there after dark.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.