START (GR TL 51311 28175 ) on B1383. At south end of bus lay-by and directly the 33 milestone. Proceed north on B1383, through Newport, Roundabout at junction with B1052, Littlebury and Great Chesterford to junction with A1301. Turn left at roundabout and straight across the next two roundabouts, passing under the A11 flyover. Take second exit at Hinxton Hall roundabout and continue along A1301 to the Sawston roundabout at junction with A505 (13.2m). ‘TURN’ (Take 4 exit) back onto the A1301 and retrace to Stump Cross roundabout at junction with B1383 Take second exit (straight on) onto B184 continue to Little Chesterford roundabout (17.2m) where TURN and retrace to Stump Cross roundabout at junction with B1383. Take 1 exit and follow B1383 to FINISH (GR TL 514277) aprox. 550 yards past start point 8 kerb joints after entrance to ‘Biffa’ site