That Dam Hill 6 Hour Run

Race completed

not publishedn/a Distance

55 m 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.

42.9834° N, 81.2330° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~6 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (6h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 23°C

Night low 12°C

Rainfall Mostly dry

Daylight 12 h 23 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 265 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	6h	6	Kanjo Melo · 72.230 km	Genvieve Morassut · 74.560 km
2024	6h	6	Andrew Hulko · 63.086 km	Charlotte Vasarhelyi · 56.327 km
2023	6h	6	Ian Grzegorczyk · 67.590 km	Elizabeth Lenz · 60.830 km
2022	6h	5	Jeremy Grampola · 65.339 km	Marylou Corino · 54.073 km
2021	6h	6	Charles Priddle · 51.768 km	Sarah Kondo · 60.771 km
2020	6h	2	Rick Mannen · 65.273 km	—
2015	6h	8	David Walker · 63.250 km	Cassandra Smith · 62.453 km
2014	6h	12	Chris Baker · 59.051 km	Marylou Corino · 61.102 km
2013	6h	26	Brian Groot · 70.805 km	Christine Torres · 71.699 km

The field has held steady: 6 in 2024, 6 in 2025. 50% of the 2025 field were women.

DUV results for the 2025 edition (6h) — 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 with 55 m of ascent.

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.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.