Haslemere, United Kingdom · Saturday, July 4, 2026

Fixed Distance 100K

Serpent Trail Race 100km

Race completed
100 km Distance
1,785 m Climbing
7.7 Grit · Hardcore
51.0902° N, 0.7078° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 18 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 18 hours 10:48 min/km average. Comfortable. Room to walk the climbs and stop at aid. About average for a 100K. Measured against 226 races of the same distance. Cut-off calculator →
Field size ~132 Mid-sized. Company early, well spread out by halfway.

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, July

Daytime high 22°C
Night low 13°C
Rainfall Mostly dry
Daylight 16 h 27 m of light

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

Results history

Year Race Finishers Men's winner Women's winner
2026 100km 132 Jamie Stephenson · 08:56:13 Sophie Biggs · 10:28:30
2025 100km 163 Ed Dickinson · 08:54:50 Lizzie Keep · 09:55:55
2024 100km 207 Juhana Kirk · 09:16:27 Sorcha Loughnane · 09:38:46
2023 100km 149 Nicholas Berry · 09:00:23 Laura Nevill · 11:21:30
2022 100km 134 James Whetman · 10:02:55 Anastasia Hounslow · 10:24:11
2021 100km 147 Tristan Stephenson · 08:38:45 Anastasia Hounslow · 11:44:42
2019 100km 81 Ben Rajan · 09:44:32 Catherine Stoneman · 13:02:23
2018 100km 36 James Williams · 10:32:58 Patricia Patterson · 13:21:08
2017 100km 13 Ollie Stoten · 09:41:40 Leila Rose · 13:55:40

The field shrank 19% between 2025 (163) and 2026 (132). 16% of the 2026 field were women.

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.

Course notes

  • terrain This is a rolling course. Expect fast, runnable sections where rhythm is key.
  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
  • nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 100 km of trail with 1,785 m of ascent.

  • Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration Vests Flask capacity for 100 km, without the bounce.
  • Headlamps A 18 h limit puts you out there after dark.
  • Accessories Chafe and blisters end more 100 km races than fitness does.
All gear guides →

Overview

The Serpent Trail Race 100km, a trail race organised by Freedom Racing, took place in Haslemere, United Kingdom. It had a field bigger than 77% of 100k races, but smaller than 22% of them, with 132 finishers in its most recent edition. The entry fee was £150.

With a total elevation gain of 1785m over 100km, the course had 17.9m of climb per kilometre. The cut-off time of 18 hours, equating to a 10.8 minutes per kilometre pace, was tighter than 43% of 100k race cut-offs, yet more generous than 57% of them. The organiser described the first half as having bigger climbs and more regular ascents, with the last 30km being flatter.

Similar races

Other 100K trail ultras, closest in distance first.