start approx. 2 miles north of boroughbridge on a168, at a mark approx. 10 yards north of kirby hill roundabout and 4 yards from the clearway sign. proceed north along a168 to dishforth roundabout, where left over bridge to roundabout, where right and via rainton lane roundabout (with care), to join a168 dual carriageway(3.20 miles).continue along a168/a19 to turn left down slip-road to south kilvington (11.54 miles). encircle island and proceed under a19 and up slip-road to join a19 southbound.continue along a19/a168 to turn left up slip-road to dishforth roundabout (21.15 miles).continue forward (straight across) on a168 via kirby hill roundabout (24.02 miles), to finish at a red paint mark directly underneath electricity power lines (25.00 miles).