Beaver Flat 50 Ultra Marathon

Race completed

50 km Distance

2,300 m Climbing

5.9 Grit · Challenging

50.5969° N, 107.8068° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 46 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Field size ~146 Mid-sized. Company early, well spread out by halfway.

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

Daytime high 20°C

Night low 7°C

Rainfall Mostly dry

Daylight 12 h 28 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 718 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	146	Ryan Burke · 05:11:03	Brandi Venne · 05:37:55
2024	50km	140	Andrew Collin · 05:17:49	Amanda Froehlich Chow · 06:02:31
2023	50km	117	Flemming Sondergaard · 05:19:48	Mandy Currie · 06:26:43
2022	50km	137	Andrew Collin · 05:04:26	Caitlin Schindel · 05:16:20
2021	50km	87	Cameron Mang · 05:48:49	Mandy Currie · 06:56:20
2019	50km	125	Flemming Sondergaard · 05:12:51	Karen Bailey · 06:35:44
2018	50km	82	Mike Sidic · 04:37:21	Brittany Steele · 06:10:20
2017	50km	62	Flemming Sondergaard · 05:45:38	Brittany Steele · 06:27:07
2016	50km	50	Andrew Collin · 05:12:08	Lisa Frazer · 07:15:48

The field has held steady: 140 in 2024, 146 in 2025. 27% 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

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert

👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for 50 km of trail with 2,300 m of ascent.

Trail Running Shoes 46 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,300 m of ascent to walk up.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

La Sportiva

Prodigio Pro

RunRepeat found the La Sportiva Prodigio Pro to have a secure, locked-in fit due to its premium upper, and also praised the shoe's energetic ride, particularly…

$225 ★★★★★ 4.6

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