Viborg, Denmark · Saturday, April 17, 2027

Fixed Distance 100K

Viborg 100 km

213 days away

100 km Distance

20 m Climbing

5.0 Grit · Challenging

56.4532° N, 9.4020° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 0 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.

Time limit 15 hours 9:00 min/km average. Comfortable. Room to walk the climbs and stop at aid. Tighter than 72% of 100K races. Measured against 208 races of the same distance. Cut-off calculator →

Field size ~45 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, April

Daytime high 11°C

Night low 3°C

Rainfall Mostly dry

Daylight 14 h 19 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 37 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a fast & flat course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

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

By UltraHub Expert

🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail with 20 m of ascent.

Trail Running Shoes100 km of trail — cushioning that is still there in the last quarter.
Race NutritionPast 100 km the palate quits before the legs do — carry more than one flavour.
Hydration VestsFlask capacity for 100 km, without the bounce.
HeadlampsA 15 h limit puts you out there after dark.
AccessoriesChafe and blisters end more 100 km races than fitness does.

Salomon

Ultra Glide 4

$159.95 ★★★★★ 4.6

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

Maurten