Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 12:40 finish (an estimate) · starting 07:00 4 Jul. Dark means the sun below civil twilight.
Climbs
4 climbs · 504 m totalbiggest firstAid stations as published on the course file
| Aid station checkpoint | km | Mile |
|---|---|---|
| 100k Start | 0.0 | 0.0 |
| A CP 1 / Linchmere Common (East) | 13.0 | 8.1 |
| A CP 2 / Hill Brow | 26.3 | 16.3 |
| A CP 3 / Henley | 39.0 | 24.2 |
| A CP 4 / Petworth Sylvia Beaufoy Centre | 50.1 | 31.1 |
| A CP 5 / Fittleworth Tripp Farm | 61.9 | 38.5 |
| A CP 6 / Grafham Common | 72.9 | 45.3 |
| A CP 7 / Midhurst | 82.6 | 51.3 |
| A CP 8 / Dumpford | 88.6 | 55.1 |
| A CP 9 / Durford Mill | 95.9 | 59.6 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for 4 Jul at the start
Typical = the median of 2016–2025 for 4 Jul ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 2 years of this race
Past editions
Race-day highs at the start ran from 20° to 25°C, and 1 of 2 race days were wet.
| Year | Start °C | Rain | Wind |
|---|---|---|---|
| 2026 Jul 4 | 25°/14° | dry | 24km/h |
| 2025 Jul 5 | 20°/15° | 1.1mm | 27km/h |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line.
Reviews what runners who have been there say
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About this course
Serpent Trail Race 100K — 2026 covers 99.9 km (62.1 mi) with 1,193 m (3,915 ft) of elevation gain. That is about 12 m per km of climbing, and 1,292 m of descent. The course tops out at 286 m and bottoms out at 5 m. There are 9 aid stations on course; the longest stretch between aid is 13.2 km. The profile has 4 sustained climbs; the biggest is the climb from km 1.9, +153 m over 3.8 km at 4.1% on average (steepest stretch 7%). Race day is 4 July 2026, starting at 07:00; the sun rises at 04:55 and sets at 21:21. Typical race-day weather at the start: a high of 20°C and a low of 13°C, with a 31% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Oct 13, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Midwest States 100 100K — 2026Aug · 106 km · 14 m/km · WISame distance · Similar climbing · Similar weather
- Great Mansfield Outdoors 50km 100K — 2026May · 102 km · 12 m/kmSimilar climbing · Same distance · Similar weather
- Ultra X Finland — 2026Jun · 108 km · 15 m/kmSame distance · Similar climbing · Similar weather
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