Start on unclassified road signposted 'Clytha' (old A40 Raglan - Abergavenny road) at yellow mark on drain cover by Light Standard on flare at western side of entrance to Monmouthshire Livestock Market (O.S. 161 384087).Proceed westwards on unclassified road (joining B4598 at Steel Horse Cafe) and continue to Hardwick roundabout to take 1st exit TO START FIRST CIRCUIT (6.155 miles).Proceed eastwards along A40 dual carriageway to enter Raglan roundabout (13.714 miles.Take 2nd exit (straight on)to Raglan interchange where bear left to Monmouth still on A40 to Monmouth Tunnels where after tunnels bear left onto road signed for Trellech and Rockfield to mini roundabout at Petrol Station (Give Way sign)(20.834 miles.)Turn left WITH GREAT CARE and follow B4239 and unclassified road through Mitchel Troy to rejoin A40 Dual-carriageway. Join A40 westbound (23.592 miles)and after passing Raglan Services bear left at Raglan Interchange signed Abergavenny (arrow) (xx miles) to remain on A40 to Raglan roundabout (xx miles).Take 3rd exit A40 (straight on) to Hardwickroundabout. Encircle roundabout to complete 1st circuit (36.62 miles). Repeat to complete 2nd circuit (67.085 miles). Repeat to complete 3rd circuit (97.55 miles). Continue eastwards on A40 for 2.574 miles to finish at mark in 3rd layby (100.124 miles).