Great British beach activities: 10 best coastal runs

For island lovers

Tresco, Isles of Scilly

Each year, on the same day as the London Marathon, the island of Tresco holds an alternative 26-mile, 385-yard run. If you'd prefer a shorter jog, you can run round the car-free island in about 25 minutes. Afterwards, pop in to the Flying Boat Club. There's great food, a collection of original art and a spa with sauna, steam room and swimming pool (www.tresco.co.uk).