This event is being run on the e2/30 course.start at l.p158. just before 'clearway' sign on slip road from a142 to a14. continue onto a14 westbound, and keep in left lane onto a11 where a14 diverges. continue to four went ways (12.77m), where take slip road to elevated roundabout. take second exit and keep left onto a505 to sawston roundabout and circle (m) to rejoin a505 eastbound. keep left on a11 and join slip road to four went ways rbt and take second exit.retrace via a11 and a14 to finish at paint mark opposite 4th catseye before large emergency telephone at start of layby which is 300 meters before slip road to a142. note: no vehicles to park on slip roads or verges, it is a clearway and stopping is an offence.timekeepers to park in layby.