Great British beach activities: 10 best coastal runs

For serious runners

The Coastal Ultra Series ‘Classic Quarter' - from the Lizard to Land's End in a day, Cornwall

First held in 2007, this hardcore marathon (it's 44 miles) takes in some of the most dramatic scenery in Britain. The route stretches from the Lizard, Cornwall's southernmost point, to its westernmost point at Land's End. Participants must be very fit - think calf-crunching climbs and knee-jarring descents - but the views of Longships Lighthouse at Land's End are worth the pain (www.endurancelife.com).