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Ultra-Trail Snowdonia by Utmb

Name: Ultra-Trail Snowdonia by Utmb
Start: 2026-05-15
End: 2026-05-15
Location: Llanberis

Llanberis, United Kingdom • 15 May 2026

Ultra-Trail Snowdonia by UTMB

Ultra-Trail Snowdonia by UTMB is a series of trail races held in Llanberis, North Wales, and forms part of the UTMB World Series. The event takes place from 15 to 17 May 2026 and features mountain courses with substantial elevation gain.

Races and core figures include:

UTS 100M: 163 km, 9200 m+ elevation, Running Stones 4
UTS 100K: 100 km, 4400 m+ elevation, Running Stones 3
UTS 80K: 78 km, 2500 m+ elevation, Running Stones 3
UTS 50K: 56 km, 3400 m+ elevation, Running Stones 2
ERYRI 25K: 25 km, 1400 m+ elevation, Running Stones 1

Several races are listed as full for the 2026 edition while others show registrations open. The event awards Running Stones across its races as part of its competition structure. The 2025 edition involved more than 60 nationalities and over 2,800 runners across the event races. Visit the organization's website for the most recent information.

United Kingdom Wales Llanberis

Race information

Website

163 km

Uts 100m

100 km

Uts 100k

78 km

Uts 80k

56 km

Uts 50k

25 km

Eryri 25k

Visit the organization's website for the most recent information.

Trail runs nearby

Sunday Jun 14

Paddy Buckley Recce Fun Run - Snowdon

Llanberis

20 km

A guided recce of the Paddy Buckley leg across the Snowdon Range from Beddgelert Forest to Llanberis on 14 June 2026. The 20 km route includes about 1,900 m of ascent and is led in small groups by qualified mountain leaders.

Sunday Jun 14

Foel Fras

Abergwyngregyn

19 km

A 19.3 km fell race on 14 June 2026 from Caffi Hen Felin, Abergwyngregyn, with 914 m of ascent. Part of the North Wales Series, the route requires navigational skills and significant experience and entries are £10.

Tuesday Jun 16

Tal y Mignedd

Dyffryn Nantlle

7 km

A midweek fell race at Tal y Mignedd Campsite in Nantlle Valley featuring a 6.7 km route with 520 m of ascent. The event is part of the North Wales Mid Week Series and includes junior races across multiple age categories.

Sat - Sun Jun 20-21

GB Ultras - Ultra Wales 50

Ganllwyd

51 mi

Ultra Wales 50 is a 51 miles trail and mountain race in Coed y Brenin and southern Snowdonia on 20 June 2026, with 2,898 m ascent and six checkpoints. Entry fee £119 and places are limited to 500.