The route uses public roads, public rights of way and some newly created permitted paths. Some sections of the footpath are waymarked by a metal plate attached to wooden posts which show a picture of the cathedral spire.
This is the best guess of the route (clockwise) based on surviving waymarks:
SU074337 Head down the hill on the footpath, under the railway line then across the river into South Newton.
SU088344 Climb the hill, passing the communication tower and crossing the A360.
The waymarks for the western section are missing. The most likely route is that the path crosses the A30 between Wilton and Burcombe, then heads north into Grovely Wood.