Start on Worminghall Road by field gate, in line with manhole cover in road located 70 feet / 21 metres after minor junction with College Crescent (Start Grid Reference: 639 115). Proceed south on Worminghall Road for 2.3 miles / 3.7 km. At crossroads (M1), take left-hand turn onto Ickford Road (Signposted Ickford, Shabbington, Thame), giving way to traffic from the right. In Shabbington, after 4.2 miles / 6.8 km, take left hand turn onto Crendon Road (M2) At fork in road by Long Crendon village sign, continue left on main road (Crendon Road becomes Sandy Lane). Continue uphill to junction of Sandy Lane and B4011, Bicester Road. Turn left to join B4011 (M3), giving way to traffic from the right. Continue on B4011 for 3.5 miles / 5.8km until finish at second layby 492 feet / 150 metres after turning to Public Weighbridge, with Oakley village sign (Finish Grid Reference: 647 121