National Cycle Route 21

Greenwich | Lewisham | South Norwood | 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.

It finishes just south of Groombridge, with a short signposted spur to the village itself.

Groombridge | Rotherfield | Mayfield | Heathfield | Hailsham | Polegate | Eastbourne The first half of this section is on undulating country roads, passing by Eridge Station.

About one mile before Eridge Station is a spur connecting Crowborough with the route.

The route then follows the whole length of the Cuckoo Trail from Heathfield to Eastbourne, crossing NCR 2 at Polegate.