20 vale of glamorgan lavernock point to sully

■ Distance: 5 miles/8km ■ Time: 3 hours ...

■ Distance: 7½ miles/12.1km ■ Time: 3 hours ■ Grade: Moderate

■ Distance: 7¼ miles/11.8km ■Time: 3¾ hours ■ ...

■ Distance: 8¼ miles/13.2km ■ Time: 4 hours ...

From gnarly ridge traverses to relaxing strolls along silvery beaches, these island hikes lend themselves to the long days of Summer

There’s no better way to discover this wild corner of Wales, says Kerry Walker