27. Pembrokeshire Coast Path
If you're looking for a hearty Welsh walk before the All Wales Coast Path opens, the Pembrokeshire Coast Path is hard to beat, according to Jo. "Its rollercoaster route over 186 miles of coastline is worth every step," she says. "My favourite section is around St David's Head, with the tempestuous Bitches tidal rapides of Ramsey Sound churning away in the distance. I've seen seals peering up from below and kestrels hovering above".