Eryri by UTMB®Llanberis, United Kingdom🇬🇧
About Eryri by UTMB® 2027
Eryri by UTMB® 2027 is a trail race held from Fri, May 14, 2027 to Sun, May 16, 2027 in Llanberis, United Kingdom; the start is at 14:00.
Registration is open; the deadline is Fri, Apr 2, 2027. Dates, registration windows and fees on this page are refreshed every morning by scanning federation, timing and organiser sites; registration always happens on the official race site.
Someone running 30 km a week needs 28 weeks, about 6.5 months, to prepare for the 163K course of Eryri by UTMB® 2027; the latest start is Fri, Oct 30, 2026.
Courses
| Course | Distance | Elevation Gain | Km-effort |
|---|---|---|---|
| 163K | 163 km | 9200 m D+ | 255 |
| 106K | 106 km | 5400 m D+ | 160 |
| 78K | 78 km | 2500 m D+ | 103 |
| 56K | 56 km | 3400 m D+ | 90 |
| 22K | 22 km | 1100 m D+ | 33 |
There are 5 courses: 163K (9200 m D+); 106K (5400 m D+); 78K (2500 m D+); 56K (3400 m D+); 22K (1100 m D+).
What the weather is usually like here
- Over the last 5 years this week typically ran 9°C to 16°C here, with a high of 23°C and a low of 5°C.
- 57% of those days saw rain. A real forecast lands about two weeks out and will appear here then.
- Typical daily maximum wind was 18 km/h (a light breeze), with 31 km/h the highest value in the sample.
- Sunrise 05:19, sunset 21:07.
The race is more than two weeks out, so these are averages of recent years for the same week, not a forecast. A real forecast appears here closer to the day.
Calculators for this race
Data sources: UTMB World Series, official site (eryri.utmb.world) · Last checked:
Tune-up races
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Frequently asked questions
(9)
When is Eryri by UTMB® 2027?
Eryri by UTMB® takes place on Fri, May 14, 2027 - Sun, May 16, 2027. Start time: 14:00.
Where does Eryri by UTMB® take place?
Eryri by UTMB® takes place in Llanberis, United Kingdom.
What are the courses and distances of Eryri by UTMB® 2027?
Eryri by UTMB® offers 5 courses: 163K (163 km, 9200 m D+); 106K (106 km, 5400 m D+); 78K (78 km, 2500 m D+); 56K (56 km, 3400 m D+); 22K (22 km, 1100 m D+).
How hard is Eryri by UTMB® 2027?
Difficulty is measured in km-effort: distance plus ascent divided by 100. The 163K course covers 163 km with 9200 m of climbing, which is 255 km-effort and falls in ITRA category XXL. All courses: 163K 255 km-effort (XXL), 106K 160 km-effort (XL), 78K 103 km-effort (M), 56K 90 km-effort (M), 22K 33 km-effort (XS).
Is registration for Eryri by UTMB® 2027 open?
Registration appears to be open; the deadline is Fri, Apr 2, 2027.
When is the registration deadline for Eryri by UTMB® 2027?
The registration deadline for Eryri by UTMB® is Fri, Apr 2, 2027.
What is the official website of Eryri by UTMB®?
Official website: https://eryri.utmb.world/
What is the weather like at Eryri by UTMB® 2027?
Over the last 5 years the same week here measured 9°C to 16°C, with a high of 23°C, a low of 5°C and rain on 57% of days. A real forecast lands about two weeks out.
Which Eryri by UTMB® course should you choose?
The shortest option is 22K (22 km, 1100 m D+) and the longest is 163K (163 km, 9200 m D+). With little trail experience the 22K is the safer start; the 163K demands an all-day effort and cut-off management.