Logo

RunThrough Snowdonia Sea2Sky

Barmouth, United Kingdom • 6 Sep 2025

RunThrough Snowdonia Sea2Sky 53k & 25k Trail Races, a brand-new RunThrough event set in Snowdonia, takes place on Saturday, 6 September 2025 in Barmouth. Runners can choose between 25k and 53k trail distances, designed to challenge participants on scenic routes with amazing views. The course is marshalled, with water stations, and results are chip-timed.

Finishing athletes receive a bespoke finisher’s medal, with post-race snacks and free event photography. The event is held at Bath House, The Quay, Barmouth LL42 1HB, UK, and emphasizes atmosphere, a challenging yet rewarding trail experience, and a memorable finish for all participants. Early Bird and group-booking options are available. Visit the organization's website for the most recent information.

United Kingdom Wales Barmouth

Race information

Registration
UTMB 20K UTMB 50K
53 km
53k
25 km
25k
Visit the organization's website for the most recent information.
Trail runs nearby

The Loop Ultra - Dolanog

Dolanog - 28 mi from Barmouth

Tackle a scenic 32 mile 50 km trail ultra through the Cambrian Mountains with views toward Snowdonia and the Shropshire Hills. Camp Plas offers an eco friendly weekend with camping, sauna, yoga and strong on course support for 100 runners.

Rad Dau Gopa Aberystwyth Twin Peaks Race

Aberystwyth - 21 mi from Barmouth

Run the iconic Twin Peaks of Pen Dinas and Constitution Hill from Aberystwyth bandstand, a scenic mixed terrain race that blends road sections with off road path climbs. Junior and senior routes make it a family friendly challenge.

Guided Trail Run - Dolwyddelan

Dolwyddelan - 24 mi from Barmouth

The Guided Trail Run in Dolwyddelan offers participants a scenic 10km route beginning in the charming village. The run features a leisurely start along the river, followed by a climb to Ty Mawr, where runners can enjoy stunning views of the..

Nant yr Arian Silver Trail

Ystumtuen - 24 mi from Barmouth

...

Take on the Nant Yr Arian Silver Trail Races on 14 March 2026 in the Cambrian Mountains for scenic, well marked trails and a lively event village. Choose a Half Marathon, 10 km or junior race and help support local charities.

Beast Of The Blacks

Llanbedr - 6 mi from Barmouth

Tackle scenic, rugged trails in the Black Mountains at the Beast of the Blacks on 14 March 2026, choosing 11, 20 or 40 mile routes. Fully marked courses with GPX files and stocked checkpoints mean river crossings and ridgelines are well sup..

Paddy Buckley Recce Fun Run - Glyderau

Capel Curig - 27 mi from Barmouth

Event overview The Paddy Buckley Recce Fun Run - Glyderau takes place on 28 March 2026 in Capel Curig, North Wales (LL24 0EN). Entries open 17 September 2025 and close 26 March 2026. The minimum age to enter is 18 on the event date. The lis..