Great British beach activities: 10 best coastal runs

For a challenge

The Pembrokeshire Half Marathon

The route for this testing half-marathon starts in the unspoilt village of Dale in the heart of the Pembrokeshire Coast National Park. Before long, you'll be sweating your way over St Ann's Head, enjoying views across to Milford Haven, before returning inland. The coast is never far away, and soon you will see Skomer Island, a vital breeding ground for the Manx shearwater. For those who'd prefer a gentler challenge, there's a six-mile race on the same day (www.pembrokeshiretri.org.uk; www.dalevillage.co.uk).