Snowdonia Sea2Sky

Course

Out-and-back from Bath House Beach in Barmouth, taking in coastal paths, forest tracks, rocky ascents and open mountain. The longer courses climb to the summit of Cadair Idris before returning along the coast. Routes are flagged and signed with marshals at major junctions.

Key dates

• ·
  Registration
  Not open yet
• ★
  Race day
  September 2027 · date to be announced

About

Snowdonia Sea2Sky is a trail ultra run by RunThrough Trails from the coastal town of Barmouth up into the Snowdonia mountains, with 12K, 25K and 54K distances on offer.

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  Snowdonia Ultra 100

  Sat 4 Sep 2027 · Betws-y-Coed, Wales · 160 km

  A 100-mile trek through Snowdonia mountain wilderness

  Save
• 

  National 3 Peaks Sea to Summit Ultramarathon Trilogy

  September 2027 · Caernarfon, Wales · Marathon · Half Marathon · 10K · 5K

  Ultramarathon trilogy summiting the highest peaks of Britain

  Save
• 

  Cardiff 10K

  Sun 5 Sep 2027 · Cardiff, Wales · 10K · 2K Fun Run

  Race past Cardiff Castle and Principality Stadium

  Save
• 

  Caernarfon Half Marathon

  September 2027 · Bangor, Wales · Half Marathon

  Flat castle-side half marathon finishing by Caernarfon Castle

  Save

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