890022 start on the aylesbury road at great missenden, opposite a drain, approximately 80 yards from the junction with the a413 at the northern end of the gt missenden by-pass 0.000 870072 proceed to the a413, where turn left (care) (m1) and continue to the roundabout at the southern end of the wendover by-pass. 3.115 856086 take the second exit (m2) still on the a413 to the roundabout at the junction of the a413/b4009. 4.776 870072 circle the roundabout (m3, m4 & m5) and retrace on the a413 to the roundabout at the southern end of the wendover by-pass. 6.467 895016 take the second exit (m6) to continue on the a413 to a point 2 yards beyond the “reduce speed now” sign, approximately 250 yards short of the link road roundabout where finish. 10.000