■ Distance: 6 miles/9.7km ■ Time: 2½-3hours ■ Grade: Easy

Stefan Durkacz traces an old rail route on a superb full-day walk

Andrew Galloway walks a linear route that’s a microcosm of Wales’ best bits

Roger Butler peers over steep slopes on a roller coaster along Offa’s Dyke

■ Distance: 11 miles/17.5km ■  Time: 6 hours ■  Grade: Challenging

■ Distance: 11 miles/18km ■ Time: 6 ...