Trail Running · Llanberis, United Kingdom
Eryri by UTMB 2027
Eryri by UTMB (formerly Ultra-Trail Snowdonia): 14–16 May 2027 in North Wales, with Llanberis and Caernarfon starts. General registration opened on 7 October 2026 at 10:00, after UTMB Index priority access. The 100M requires a valid 100K or 100M UTMB Index. Remaining places, exact distances and the final registration deadline are unconfirmed.
Illustrative sport image; not a photograph of this event or its course.
Key facts
- Date
- 14 May 2027 — 16 May 2027
- Location
- Eryri, North Wales — Llanberis / Caernarfon, Llanberis, United Kingdom
- Sport
- Trail Running
Formats
trail-running · 100M · 100K · 80K · 50K · 25K · Ultra-Trail Snowdonia · UTS
Confirm distances, divisions and entry availability with the organiser.
Official source
Official organizer source · 2026-10-08
View official event page ↗Official registration ↗Registration and race choices
Official information checked: 2026-10-08
- Registration opening
- Priority access started on 5 October 2026 at 10:00 for valid UTMB Index holders. General registration opened on 7 October at 10:00, without a lottery. Times are as stated by the organizer. Official source ↗
- 100M qualification
- A valid UTMB Index in the 100K or 100M category is required when purchasing 100M entry. The opening of general registration does not remove this race-specific condition. Official source ↗
- Formats and start towns
- 100M, 100K, 80K, 50K and 25K race labels are listed for 2027. The 80K starts in Caernarfon; the other listed races start in Llanberis. Labels are not a claim of exact measured distances. Official source ↗
- Unconfirmed details
- The organizer states registration is open; remaining capacity is not independently confirmed on the linked platform. Exact distances differ between official pages. The conditions give “Sunday 2 April 2027”, whose weekday and date do not match: the final deadline remains unconfirmed. No waiting list is announced. Official source ↗