Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 22:45 finish (an estimate) · starting 13:00 22 Jan · headlamp km 34–139. Dark means the sun below civil twilight.
Climbs
14 climbs · 1,022 m totalbiggest firstAid stations as published on the course file
| Aid station checkpoint | km | Mile |
|---|---|---|
| A Lizard Point | 17.2 | 10.7 |
| A Porthleven | 40.1 | 24.9 |
| A Penzance | 64.3 | 40.0 |
| A Porthcurno | 82.0 | 51.0 |
| A Land's End | 89.5 | 55.6 |
| A Pendeen | 105.7 | 65.7 |
| A Lelant | 133.7 | 83.1 |
| A Godrevy | 144.2 | 89.6 |
| A Portreath | 155.9 | 96.9 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
Race director? Check this course and correct anything that’s off, and it carries a ✓ verified by the race badge everywhere it appears, including the free map embed for your own site. Claim your course.
Ran this course and something’s off — an aid station moved, a reroute, a wrong number? Report it and we’ll chase it down; fixes land for every runner (and count toward the race’s verified badge).
Conditions typical race-day weather for 22 Jan at the start
Typical = the median of 2016–2025 for 22 Jan ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac the sky on race day
Next race day Fri, Jan 22, 2027 · 1:00 PM start
First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.
Reviews what runners who have been there say
No reviews yet — be the first to run it and tell other runners what to expect.
About this course
Arc of Attrition by UTMB 100 Mile — 2027 covers 171.6 km (106.6 mi) with 5,511 m (18,081 ft) of elevation gain. That is about 32 m per km of climbing, and 5,437 m of descent. The course tops out at 121 m and bottoms out at -1 m. There are 9 aid stations on course; the longest stretch between aid is 28.0 km. The profile has 14 sustained climbs; the biggest is the climb from km 107.2, +99 m over 2.8 km at 3.5% on average (steepest stretch 20%). Race day is 22 January 2027, starting at 13:00; the sun rises at 08:08 and sets at 16:57. Typical race-day weather at the start: a high of 9°C and a low of 6°C, with a 41% 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.
Load the course in the TrailGoat Run Planner for grade-adjusted pacing, climb-by-climb splits, hourly weather and a full hydration & fueling plan — free, no account needed.
Race director? — one line of HTML, always up to date.
Course history
- Oct 29, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
More race courses
- Ice Age Trail 50 — 202777.5 km · location TBD
- Penyagolosa Trails CSP 106K — 2027105.2 km · location TBD
- Trail 100 Andorra by UTMB Ultra 105K — 2027103.2 km · location TBD
- Dolomiti Extreme Trail 103K — 2027100.2 km · location TBD
- Mozart 100 by UTMB — 2027115.9 km · location TBD
- West Highland Way Race — 2027152.1 km · location TBD
More races in the United Kingdom →
Not seeing the race you came for? — most are live within a day.