START GR392542, on A603, at the edge of a wired equipment enclosure, approx 220yards north east of entrance splay to MRAO site west of Barton near milestone "Cambridge 5 miles". Proceed south west on A603 to:- TURN at Wimpole RAB junction with A1198 and retrace outward route to:- FINISH GR390541, on A603, 7yards AFTER a large metal grid in the carriageway approx 180yards BEFORE entrance splay to MRAO site. Police Area(s) Cambridgeshire. Local Regulation No.1 No U turns should be made in sight of the start or finish areas while riding on the public highway. Local Regulation No.3 No cars other than that of the timekeeper(s) and other event officials are to be parked in the vicinity of the start or finish points. LOCAL REGULATION specific to F16 courses. The entrance splay to MRAO site is NOT to be used for any purpose relating to CTT events. This applies to competitors, supporters, club officials, photographers etc. No parking of vehicles on verges within 200yards of site entrance.