Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 3:40 finish (an estimate) · starting 07:00 16 May. Dark means the sun below civil twilight.
Climbs
3 climbs · 1,281 m totalbiggest firstConditions typical race-day weather for 16 May at the start
Typical = the median of 2016–2025 for 16 May ±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 Sun, May 16, 2027 · 7:00 AM 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
Eryri by UTMB Eryri 25K — 2027 covers 24.3 km (15.1 mi) with 1,358 m (4,455 ft) of elevation gain. That is about 56 m per km of climbing, and 1,357 m of descent. The course tops out at 1,066 m and bottoms out at 105 m. The profile has 3 sustained climbs; the biggest is the climb from km 0.0, +961 m over 7.5 km at 12.7% on average (steepest stretch 35%). Race day is 16 May 2027, starting at 07:00; the sun rises at 05:18 and sets at 21:10. Typical race-day weather at the start: a high of 15°C and a low of 8°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
- Nov 1, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Tenerife Bluetrail by UTMB Tenerife Bluetrail TENERIFE BLUETRAIL 24k — 2027Apr · 23 km · 57 m/kmSame distance · Similar climbing · Similar weather
- Tenerife Bluetrail by UTMB Tenerife Bluetrail 24K23 km · 57 m/km · Provincia de Santa Cruz de TenerifeSame distance · Similar climbing
- Breakneck Point Trail Runs 21K — 2027May · 23 km · 58 m/kmSame distance · Similar climbing · Same month
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.