Start on A19 approx 1.1 miles south of Thirsk by-pass, at northern exit from lay-by on west side of road. Proceed north on A19, under by-pass to traffic island where take 3rd exit (right) & continue up slip road to join A19 dual carriageway. (1.53 miles) Continue on A19 to slip road to A684, signed Northallerton. (11.15 miles) Bear left down slip road Keep left give way & continue under dual carriageway, keeping left to join A19 southbound carriageway. Stay on A19/A168 to slip road to A167 (Topcliffe, Northallerton) . (25.67 miles) Bear left on slip road, continue under A168 dual carriageway, where turn right, right again (give way) onto slip road to A168 northbound. Proceed on A168/A19 to junction with slip road to A684 (2ND time). (40.24 miles) Bear left down slip road keep left, give way & continue under dual carriageway, keeping left to join A19 southbound carriageway. Continue on A19 to finish at start of last kerb stone parallel with carriageway, in penultimate lay-by before slip road to A19 (signed York) 50 miles. Finish lay by is approx 0.5 miles north of last lay-by, & approx 1 mile before start of slip road.
Measured by P Hurt 2008