Course
Starts at sea level by Caernarfon Castle at 06:45 and finishes at Bron y Fedw Uchaf, Rhyd Ddu, taking in Yr Wyddfa by the Watkin Path and South Ridge. The route runs 29 miles with about 5,600 ft of ascent over coastal trail and rugged mountain ground, with a 20.5-mile option available from the second pit stop. Three pit stops support the course.
Key dates
- ★Race daySeptember 2027 · date to be announced
About
The Rat Race Sea to Summit 3 Peaks trilogy takes you to the summit of the high points of England, Scotland and Wales along 3 spectacular and varied ultramarathon distance routes. With routes specially and uniquely designed by Rat Race, these will not be your standard days out on these tops.
Save Rat Race Sea to Summit - Yr Wyddfa to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Gower Coastal Trail Races
Coastal trails along Wales rugged Gower Peninsula cliffs and beaches
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Pembrokeshire Half Marathon & 10K
Country lanes overlooking Milford Haven Waterway
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Cardiff Half Marathon
A fast capital half past Cardiff castle and the bay
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.
