The Thames Path from the the river`s source to Erith in south-east London on mapping at 1:25, 000 from the Ordnance Survey’s Explorer series in a pocket-size booklet from Cicerone Press. The 288km / 180-mile trail is presented with a route profile, plus summaries for each section showing GPS coordinates for the start & finish, distance & approximate walking time in either direction. Mapping in the pocket booklets from Cicerone Press is identical to the OS Explorer Series, but with the route more prominently highlighted: contours at 5m or 10m intervals, extensive range of symbols for tourist information including campsites, pubs, castles & forts, museums, etc, & for GPS users the lines of the British National Grid at 1km intervals. To see other titles in this series please click on the series link.