The Nyctophobic 100k audax. Chalfont St Peter.

Starting at Chalfont St Peter this 100k audax goes across the Chilterns to Benson and back. A scenic route with some climbs at the usual sensible audax speed. Expect to do it in about 4 to 5 hours if you follow the route sheet and don't get lost. Entry form etc on Audax UK web site, click on calendar.