Start on A18 at LP36 at lay-by 300yds west of Riby X Rds (A18/A1173). West on A18 through Great Limber to Kirmington.   Left at X Rds onto UC road to Fonaby Top and A1173.  Sharp left onto A1173 to finish at field entrance 0.4 miles south of A18 X Rds.