RunThrough Snowdonia Sea2Sky
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Snowdonia Sea2Sky
Snowdonia Sea2Sky runs from Barmouth, Wales into Eryri (Snowdonia) National Park with base camp at Bath House Beach, Barmouth, LL42 1HB. The course moves from sea level up through ancient Welsh oak woodland, across mountain ridgelines, and back down to the Mawddach Estuary, offering a point to point route that includes coastal, woodland and mountain trail sections.
Distances and key race data:
- 12K : 12 km, 600 m elevation gain, trail, minimum age 18, cut-off 4 hrs
- 25K : 25 km, 739 m elevation gain, mountain trail, minimum age 17, cut-off 11 hrs, UTMB index 20K
- 54K : 54 km, 1,647 m elevation gain, mountain trail to Cadair Idris summit and back, minimum age 20, cut-off 12 hrs, UTMB index 50K
Aid stations provide water, electrolytes/sports drink, coke, fruit (banana, orange), sweets, salty snacks, energy bars and energy gels; provisions vary by station. The event is cupless so participants must provide their own cup or soft flask. All races are chip timed and results are posted online shortly after finish.
Additional facilities include bag drop, portaloos, food and snacks, a finish aid station, hot drinks and a kit stall. A mandatory briefing takes place 15 minutes before each race start at Base Camp. Walking poles are permitted. Headphone use is discouraged; open ear and bone conducting headphones are permitted as long as announcements can be heard. Race bibs are collected from the Event Village on race-day morning; registration opens 1 hour 30 minutes before each start. Volunteer roles include course marking, aid station support, marshalling and base camp setup, with race credits offered. Visit the organization's website for the most recent information.
