NCR 21

National Cycle Route 21 (or NCR 21) is part of the United Kingdom's National Cycle Network. It runs from Greenwich in South-East London south to Crawley, then east to Groombridge and south to Eastbourne, with a short final loop northwards again to its end at Pevensey.

The route is approximately 150 km (93 miles) long. Several sections are not suitable for road bikes.

Links to:

The route forms much of the English section of the Avenue Verte, a planned long-distance cycle route linking London and Paris.

Greenwich | Lewisham | Catford | New Addington | Redhill | Horley | Gatwick Airport | Crawley

This section starts by leaving NCR 4 beside the River Thames and following the Waterlink Way south through South-East London, generally on well-surfaced bridleways and residential roads and climbing gently. On leaving Greater London the route quickly becomes more rugged, following a number of paths and roads, including the long access road to Woldingham School. After passing under the M25 motorway the track quality improves again and the route heads west to Redhill, before again heading south, close by the London-Brighton railway. It passes directly underneath the South Terminal of Gatwick Airport, weaves through the runway approach lights and continues south to Crawley.

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