A rolling ride on practically deserted roads to Marlow and Cookham, hugging the River Thames past Boulter's Lock to Maidenhead before you turn for home.
The hard work is done as you crest Abbey Barn Lane, leaving you to enjoy the stunning countryside and blushing cherry trees under clear blue skies. Cross the Thames at Marlow Bridge, tackle Quarry Bank and Winter Hill, then rejoin the Thames again after passing through Cookham. Climb through Taplow, passing Cliveden House (the Profumo Affair), and skirt through Beaconsfield before returning to your starting point at Penn.