09 hertfordshire lemsford

■Distance: 7½ miles/12km ■ Time: 4 hours ■ Grade: Moderate

■Distance: 4½ miles/7.1km ■ Time: 2½ hours ■ Grade: Easy

■Distance: 6¾ miles/10.8km ■Time: 3-3½ hours ■Grade: Moderate

DIFFICULTY MEDIUM DISTANCE 17.7KM TIME 5½ ...

■Distance: 6¼ miles/10km ■Time: 4 hours ■Grade: Moderate

■Distance: 7½ miles/12km ■ Time: 3½ hours ■ Grade: Moderate