New Addington MTB Loop Through Warlingham and Woldingham - Bikemap
Another route that's a mixture of on and off road.  Probably possible on a hybrid but I'd definitely recommend a mountain bike.
Start out of New Addington by heading down Lodge Lane (you can take
the road but we normally take the path that runs from the big roundabout
down on the left side of the tram tracks).  On road work your way back
up to the top of Court Wood Lane in Forestdale and ride up through the
woods to the entrance to Old Farleigh Golf Club (which is also a fun
descent in it's own right).  Turn on to Old Farleigh Road and then take
the path on the left which goes right up to The Harrow.  At The Harrow
turn left on the road and stay on road until you get to the woods which
pass behind the cemetary.  At the end of that cross the Limpsfield Road
and ride down the flint path by the side of Waddon Golf Course (lots of
fun flat out, especially at night), past the club house and up to the
road.
Once you've worked your way down on to the drive for the girl school
(I think it's part of cycle route 21) you start a long slow tarmac drag
to the bottom of Great Church Wood.  The ride up through Great Church
Wood is good fun but will test both your lungs and legs (for an
alternate route keep going up the drive to the bottom of Ganger's Hill
and work up through the woods there (which will give you just the same
level of workout).
Once you're at the top of Ganger's Hill you're back on the road
towards Botley Hill Farm (which is a good place for a well earned pint
before heading downhill towards home).  After Botley Hill Farm you can
take the cycle path down until turning on to the road at Beech Farm Road
and following that past the White Bear towards Park Road and the field
which runs parrallel to Skid Hill Lane that will take you back to New
Addington.
If you fancy a slightly longer ride then you can carry on down the
cycle path on Croydon Road/Limpsfield Road, take the path on the right
down to Ledgers Road, on road to Church Lane, through Holt Wood on the
unmade road and then down (and up) High Hill Road (which is also unmade)
before rejoining the route by The White Bear.
Mountain Bike
Robin Grant on scottexservices.com