Lyme Regis, United Kingdom · Saturday, July 4, 2026

Fixed Distance 100K

Ham & Lyme 100 Km Run

Race completed
100 km Distance
5,660 m Climbing
10.0 Grit · Elite / extreme
50.7265° N, 2.9348° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 57 m / km Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 15 hours 9:00 min/km average. Comfortable. Room to walk the climbs and stop at aid. Tighter than 71% of 100K races. Measured against 203 races of the same distance. Cut-off calculator →
Field size ~24 Small. Long stretches with nobody in sight.

DUV results for the 2022 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, July

Daytime high 19°C
Night low 14°C
Rainfall Mostly dry
Daylight 16 h 23 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 42 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
🥤 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 5,660 m of ascent.

  • Trail Running Shoes 57 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 5,660 m of ascent to walk up.
  • Headlamps A 15 h limit puts you out there after dark.
All gear guides →

Course Notes

The race take in the stunning Liberty Trail from Lyme Regis in Dorset to Ham Hill Country Park in Somerset and back.

Similar races

Other 100K trail ultras, closest in distance first.