East Sussex has many miles of fantastic walking on the coast and in land
http://www.walkinginengland.co.uk/sussex
List of walks: http://www.thehiker.co.uk/routes/
We will add walks shortly:
Rye to Camber Castle: 4.5 mile walk, flat easy walk, start & finish Rye station, Circular route from Rye to Camber Castle (printable description & map)
Rye and Camber Sands via Guldeford: 9 mile walk, flat easy walk, start and finish at Military road, Camber (Link for printable description, best to have the ordinance survey explorer map 125)
Rye Bay walks: Several short walks in the Rye country side
Playden & Rye: 3 miles, generally easy walk, start & finish at Rye station (download a pdf route map from link)