25 highland abriachan forest

■ Distance: 7½ miles/12km ■ Time: 4-5 hours ■ Grade: Challenging

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

■ Distance: 5¼ miles/8.3km ■ Time: 2½ hours ■ 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

■ Distance: 8¾ miles/14.2km ■ Time: 4 hours ■ Grade: Moderate