Beachy Head Marathon, Ultra & 10K 2026

The Beachy Head Marathon, Ultra & 10K is an off-road race weekend held on the Eastbourne seafront in Sussex, with its event hub at Bede's Prep School. The programme includes a marathon, 10K, half marathon, and a 52K ultra, with the half marathon taking place the day after the marathon. The marathon is one of the largest off-road marathons in the UK, and it suits runners seeking hills and open-country running over a flat road-race rhythm. The marathon starts and finishes on the Eastbourne seafront, then enters the South Downs National Park on a challenging countryside route. The race was formerly known as the Seven Sisters Marathon, indicating the type of terrain runners should anticipate. The 10K follows a shorter loop across the Downs to Belle Tout Lighthouse and returns, while the ultra connects the full marathon course with the 10K route for a total of 52K, or 32.4 miles.