Watford Cycle Hub, The Pavillion, Holywell Commmunity Centre, Tolpits Lane, Watford
From Watford out through Chorleywood and Chalfont St Peter for refreshments at Denham Aerodrome (the Crew Room) and return via Harefield. 1100 feet of climb. All on road or tarmac cycleway. Suitable for any bike. Speed average about 11 mph, challenging hills out to Denham, easy ride back.