The Downs Link is an off-road trail linking Artington (2 miles south of Guildford) with Shoreham-by-sea. It follows the line of a disused railway and as such makes for easy and safe cycling. The whole length is about 37 miles but can be cycled in sections and is particularly well suited to families. There is a signed link to it (following National Cycle Route 22) from Guildford town centre.
The surface is not tarmac but it is firm and generally well drained and there is a continuous programme of maintenance. The trail is suitable for all types of off-road bicycle but can also be ridden quite comfortably (especially in the Surrey section) on a touring or hybrid bike.
The Cycling from Guildford website has some excellent cycle route information on its website, including the Downslink. Information, maps and leaflets are also available from West Sussex County Council.