Saksvik, Norway · Saturday, October 10, 2026

Fixed Distance 50 mi

Krukes Ultra-Trail Challenge 12 laps

24 days to go

80 km Distance

4,424 m Climbing

10.0 Grit · Elite / extreme

63.4346° N, 10.6040° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 55 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Time limit 15 hours 11:15 min/km average. Generous. Walkable throughout for most of the field. About average for a 50 mi. Measured against 455 races of the same distance. Cut-off calculator →

Field size ~4 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, October

Daytime high 7°C

Night low 2°C

Rainfall Showers likely

Daylight 10 h 33 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation 263 m. Not a forecast.

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 80 km of trail with 4,424 m of ascent.

Trail Running Shoes55 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition80 km of self-supported fuelling between aid stations.
Hydration VestsPole attachment and chest-strap stability on steep ground.
Trekking Poles4,424 m of ascent to walk up.
HeadlampsA 15 h limit puts you out there after dark.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 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

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

All gear guides →

Course Notes

The course consists of an out-and-back loop, 6.7056 km long with 368.666... meters of elevation gain. 24 loops corresponds to 100 miles and an elevation gain of 8848 meters (one Everest). Trails.

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