Start in an old bus stop opposite the army base 29th regt on the a419 Cirencester road (os ref 052 99.7). Proceed south on the a419 to the airfield roundabout, take the 1st exit off, proceed down the slip road to join the 419 daul carriageway southbound. Leave the dual carriageway at Cricklade and cross the flyover ,at the first roundabout take the2nd (straight over) and continue to 2nd roundabout turn at 2nd roundabout and retrace to 1st roundabout and take 1st exit to rejoin A419 northbound (signposted for Cirencester). Continue on this road past Spin road junction ,the finish is on the A419 (os ref 071 981) ,exit the A419 at the south Cerney /Cirencester industrial estate junction