From beautiful Barmouth beach to the iconic summit of Cadair Idris and all the way back
RunThrough Events are excited to introduce to you our 53k and 25k event around Snowdonia in 2024! Barmouth on the coast of Eryri National Park is the perfect setting for our first event in the beautiful Snowdonia area. With stunning scenery from the coast up to Cader Idris, supported by our team of enthusiastic marshals, the Sea2Sky 25k & 53k Ultramarathon is perfect for both seasoned athletes and first timers!