Calw-Altburg, Germany · Saturday, October 3, 2026

Fixed Distance 50K

e2h10k-50km Ultrarace

17 days to go

50 km Distance

420 m Climbing

3.1 Grit · Challenging

48.7142° N, 8.7403° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 8 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.

Time limit 10 hours 12:00 min/km average. Generous. Walkable throughout for most of the field. About average for a 50K. Measured against 1007 races of the same distance. Cut-off calculator →

Field size ~16 Tiny. You will run alone for most of it.

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, October

Daytime high 14°C

Night low 5°C

Rainfall Mostly dry

Daylight 11 h 37 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation 556 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

Gear for this race

Chosen for 50 km of trail with 420 m of ascent.

Trail Running Shoes50 km of trail — cushioning that is still there in the last quarter.
Race Nutrition50 km of self-supported fuelling between aid stations.
Hydration VestsFlask capacity for 50 km, without the bounce.
GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Adidas

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Course Notes

50km /100km in 5/10x 10km Runden. Maximale Rundenzeit von 2 Stunden darf nicht überschritten werden. Wann zu den Runden gestartet wird ist jedem selbst überlassen. Trail- 95% Waldwege-Pfade- alpines Gelände. Half-Self Supporting

Similar races

Other 50K trail ultras, closest in distance first.