Sea2Sky 10k 2026

The Sea2Sky 10k is a multi-terrain event now in its 13th year, starting from the promenade in Newcastle, Co. Down. The route leaves the coastal promenade and takes runners on a mix of road and track surfaces before heading up into the foothills of the Mourne Mountains. The first half of the course climbs gradually off-road through scenic terrain, reaching the 5k mark at an elevated vantage point offering sweeping views over Newcastle and the Irish Sea. Runners then descend back down to finish on Newcastle's promenade. Note: this race includes off-road trail sections and distances are approximate. ⚠️ Multi-terrain — confirm eligibility for database.