start on b3414 east of warminster town centre 100 meters east of entrance to rock lane – ride east on b3414 to roundabout on a36 - continue on a36 eastbound to left turn onto b390 at knook camp - continue on b390 to chitterne village where left turn onto unclassified chitterne-tilshead road to junction with a360 at tilshead - left turn onto a360 and continue to crossroads with b390 at west lavington - left turn at crossroads onto b390 - continue on b390 to finish at white horse viewing area.