5 15.6 km / 9.7 miles / 6 hours Ascent 1080m/3543ft

4 38.9km / 24.2 miles / 12-14 hours Ascent 2927m/9603ft

6 20.6km / 12.8 miles / 7-7.5 hours Ascent 1122m/3680ft

We arrive at the top of High Cup Nick in the North Pennines. “It’s like the world starts just over there,” comments my friend Mark. He’s pointing down the U-shaped chasm of High Cup Gill, beyond whose

3 6.3km/3.9 miles/3-4 hours Ascent 760m/2493ft

■ Distance: 5½ miles/8.7km ■ Time: 3½-4½ hours ...