1 From the station forecourt turn left and pass Didcot Labour Club, then turn left at the junction 75yds (69m) beyond. Once through the railway tunnel, turn left to join a tarmac path signposted to Long Wittenham. Follow the path alongside the railway line, with the familiar chimneys of Didcot Power Station ahead of you on the horizon. Pass alongside modern housing estates, merge with another path and keep a footbridge on the left. Continue to a tunnel beneath the A4130 and leave the outskirts of Didcot, following the path along the field edge.
2 Keep ahead between fence and stream and look for the outline of Wittenham Clumps on the far horizon over to the right. Make for a millennium mile post, one of 1,000 such posts to mark the creation of the National Cycle Network, and cross the road at Bow Bridge. Continue towards Long Wittenham, cross a bridge and swing away from the water by a tongue of woodland. Keep on the path between fields and thick hedgerows and enter Long Wittenham. The tarmac path graduates to a lane before reaching Pendon Museum on the left.
3 Continue to the junction and war memorial and follow the main street. Pass the Plough and the Vine pubs and turn left by some thatched and timber-framed barns to reach St Mary's Church, cutting between two yew trees to the main door. Inside is a most impressive 12th-century font, made by casting two flat slabs of lead, embossed in the lower half with 30 figures of archbishops holding their right hands in benediction and their crosiers in their left hands. Each stands beneath a pointed arch which forms a complete arcade.
4 After visiting the church, return to the gate and swing right to join a footpath. Cross the churchyard to a kissing gate and follow the path as it curves left across a small pasture to reach a drive. Turn left to the road, then turn right and retrace your steps to the war memorial. Keep ahead towards the museum and turn right immediately before a cottage (No 15).
5 Follow the track, keeping to the left of some gates, and emerge from some trees to skirt a field, hugging the right-hand boundary. Glancing to the left reveals a good view of a railway signal, part of Pendon Museum. Continue ahead in the field corner, cross a concrete footbridge and turn right to reach a wooden footbridge. Follow the path across the field towards trees and Appleford's church spire, just visible beyond. Make for a large oak on the far side of the field, pass into the next pasture and follow the path to the edge of Appleford. Make for the churchyard boundary, pass Manor Farm on the right and follow the road between houses. Keep right at the triangular junction and walk along to Appleford Station, from where frequent trains head back to Didcot Parkway.
6 When you get back, follow the signs for the Didcot Railway Centre.