Black River Run 50 Miles

Race completed

80 km Distance

not publishedn/a Climbing

4.0 est Grit · Challenging

Calculated from 80 km alone — the organiser has not published an elevation profile. Read 4.0 as a floor, not a verdict.

59.6162° N, 16.5528° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 30 hours 22:30 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Among the most forgiving 50 mi cut-offs we track. Measured against 471 races of the same distance. Cut-off calculator →

Field size ~23 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (80.5km) — 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 17°C

Night low 9°C

Rainfall Mostly dry

Daylight 12 h 38 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 47 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	80.5km	23	Kent Melin · 07:22:38	Gunilla Axelsson · 08:53:00
2024	80.5km	35	Kenneth Löfman · 07:21:22	Hedvig Orvenholt · 08:52:28
2023	79.4km	23	Joakim Nordfeldt · 07:31:19	Gunilla Axelsson · 08:38:15
2022	79.4km	26	Daniel Zetterqvist · 07:51:03	Elin Tengbert · 07:29:39
2021	79.4km	33	Can Karakoyun · 07:38:47	Therese Evertsson · 09:13:38
2019	50mi	39	Marcus Nilsson · 06:48:24	Michaela Rönnqvist · 09:21:54
2018	50mi	54	Anders Hellner · 06:52:48	Gunilla Axelsson · 07:59:02
2017	50mi	53	Kristoffer Sjöberg · 06:43:01	Judith Trunschke · 07:20:30
2016	50mi	39	Daniel Henriksson · 07:34:41	Gunilla Axelsson · 08:34:31
2015	50mi	27	Christian Ritella · 07:26:46	Elin Jakobsson · 09:05:15

The field shrank 34% between 2024 (35) and 2025 (23). 39% of the 2025 field were women.

DUV results for the 2025 edition (80.5km) — 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

👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for 80 km of trail.

Trail Running Shoes 80 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 80 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 80 km, without the bounce.
Headlamps A 30 h limit puts you out there after dark.
GPS Watches Battery life first — a 80 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

Asics