Start on Unclassified Dale Rd, Herbrandston opposite gateway to XXX Farm, proceed east towards Milford Haven.
Turn left at junction signposted Teirs Cross onto the Unclassified Old Hakin Road towards Tiers Cross. At Tiers Cross roundabout take the 2nd exit Bulford Rd By pass and continue towards Johnston roundabout where take the 4th exist to Tiers Cross Roundabout. At Tiers Cross (end of first loop) roundabout take the 2nd exit Bulford Rd By pass and continue towards Johnston roundabout where take the 4th (second visit) exist to Tiers Cross Roundabout. At Tiers Cross roundabout (third visit) take the 2nd exit back to the Johnstone Roundabout (3rd visit). At the Johnstone raoundabout (third pass) take the 4th exit to Tiers Cross where take the first exit on Old Hakin Rd signposted Herbrandston to finish at St. Boltoffs sign directly opposite Puma Refinery entrance.