'Walking is by far the most popular countryside recreation, and is well catered for in the Colne Valley. Facilities range from short circular walks on surfaced paths to leaflets detailing much longer countryside rambles.'

Colne Valley Food Trail

'There are many great walks in the Borough including the Hillingdon Trail, nature walks and healthy guided walks.'

'The Inaugural meeting was held on July 6th 2011. We already have over 400 members and over 40 groups getting started on all sorts of topics, ranging from Theatre, Walking and Bridge to Greek, Architecture and Indian Music. Something for everyone!'

'A walk of 12 miles along the River Pinn from Pinner to the Grand Union Canal at Cowley, through green spaces, conservation areas and wildlife havens.'

Hillingdon London Borough Council

'Starts at Rickmansworth and follows the River Colne southwards ending at Colnbrook. There is a link path to Langley from Cowley Lock. Plans are in hand to extend the Colne Valley Trail further south. Originally listed as two separate routes and now combined to form a 14 mile route from Rickmansworth to Colnbrook.' Two free leaflets cover the route and are available from the Colne Valley Regional Park Visitor Centre.

Colne Valley Trail [GPS Cycle & Walking Routes] | The Big Walks of London [John Merrill Walk Guides, 2008]

'Path through Hillingdon's countryside from Cranford in the south-east to Harefield in the north-west'

Hillingdon London Borough Council

'Ruislip Woods National Nature Reserve is the largest block of ancient, semi-natural woodland in Greater London and include one of the most extensive oak/hornbeam coppice woods in southeast England. The site also includes acid and neutral grassland, ponds, streams and marshland.'

Ruislip Woods Trust

Ruislip Woods National Nature Reserve [London Borough of Hillingdon]

'This is a real country walk taking in elements of the Celandine Route, the Hillingdon Trail, the London Loop, the Colne Valley Trail and the Grand Union Canal Walk. Often in deep countryside with no buildings visible, it is nonetheless almost all within the boundary of Greater London.'

Mike Biggs Inner London Ramblers