START two kerb joints before exit to section of old road Balsham Road Fulbourne (TL 52318 55355) proceed SE towards Balsham and in 1.6m turn left onto slip road to A11 northbound, follow A11 past Gt Willbraham junction (3.04m)(start of circuit), to exit left onto A1304, through Six Mile Bottom to Stetchworth Roundabout. TURN (8.29m) and retrace on A1304 through Six Mile Bottom to join A11 (12.67m) southbound, in approx.4 miles take slip road exit to Four Went Ways roundabout,(17.5m) take second exit to rejoin A11 southbound, in approx 0.75m keep left onto A505 to Sawston roundabout (20.27m) TURN and retrace on A505 to join A11 northbound, keep in left lane to Four Went Ways roundabout (23.05m) take second exit to rejoin A11 northbound, continue to complete circuit at Gt Willbraham junction Gt Willbraham junction (27.04) (Circuit is 23.99m) Repeat circuit (2)(51.03m) again (3)(75.02), and again, on completion of fourth circuit (99.01m) turn left into Mill Road to FINISH (TL 55352 56513) at major EP just before sub station 400 yards after bridge over railway.