1:25 000 scale (4 cm to 1 km – 2.5 inches to 1 mile) The essential map for outdoor activities. OS Explorer Map is the Ordnance Survey’s most detailed folding map and is recommended for anyone enjoying outdoor activities including walking, horse riding and off-road cycling. Providing complete GB coverage, the OS Explorer map series details information essential in the great outdoors, including youth hostels, pubs and visitor information. Rights of way, fences, permissive paths and bridleways are clearly shown, ensuring you have the best information to get the most out of your time in the countryside. 269 Chesterfield & Alfreton featuring :- High Peak Trail, Archaeological Way (Notts), Midshires Way, Cuckoo Way, Five Pits Trail, Trans Pennine Trail, Derwent Valley Heritage Way, Mansfield Trail, Nottinghamshire, Derbyshire, Chesterfield.