South Downs 100 km

Race completed

100 km Distance

7,900 m Climbing

10.0 Grit · Elite / extreme

50.8552° N, 0.5508° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 79 m / km Vertical. Extreme verticality. This is a technical mountain course with sustained steep grades.

Time limit 18 hours 10:48 min/km average. Generous. Walkable throughout for most of the field. About average for a 100K. Measured against 203 races of the same distance. Cut-off calculator →

Field size ~58 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, May

Daytime high 16°C

Night low 8°C

Rainfall Mostly dry

Daylight 15 h 51 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 51 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a vertical 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

🥤 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 7,900 m of ascent.

Trail Running Shoes 79 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 7,900 m of ascent to walk up.
Headlamps A 18 h limit puts you out there after dark.