0 sp901001 start in the ' old' a413 (london road) great missenden, 150 yards before nags head lane on the right and telegraph pole number dp517 on the left. su904998 proceed east to join the great missenden by-pass (m1) 0.227 sp896015 turn left onto the by-pass to go straight on at the first roundabout and moving over to the right –hand lane at the second roundabout, still on a413 (m2) 1.198 1.425 sp872068 continue on the a413 to the roundabout at the southern end of the wendover by-pass where turn left (m3) 3.835 5.260 sp853086 take the second exit, still on the a413 to the roundabout at the junction of the a413 and the b4009. 1.690 6.950 sp872068 circle the roundabout, (m4, m5 & m6) and retrace along the a413 to the roundabout at the southern end of the wendover by-pass 1.662 8.612 sp896015 take the second exit (m7) on the a413 and continue to the roundabout at the junction with the link road at great missenden. go straight on (moving to the right hand lane) and take the second exit at the next roundabout (m8) su947980 continue on the a413 to the roundabout at shardeloes where move to the right and, taking great care, turn and take the fourth exit to retrace northwards on the a413. (m9, m10, m11) (check) sp896015 continue along the great missenden by-pass, straight through the first roundabout and moving to the right hand lane to take the second exit at the next roundabout (m2) sp872068 to the roundabout at the southern end of the wendover by-pass 3.676 4.073 4.073 3.754 12.288 16.361 20.434 24.188 sp853086 take the second exit (m3), still on the a413 to the roundabout at the junction of the a413 and the b4009. 1.661 25.849 sp872068 circle the roundabout, (m4, m5 & m6) and retrace along the a413 to the roundabout at the southern end of the wendover by-pass 1.691 27.540 sp896015 take the second exit (m7) on the a413 and continue to the roundabout at the junction with the link road at great missenden. go straight on (moving to the right hand lane) and take the second exit at the next roundabout (m8) su946980 continue on the a413 to the roundabout at shardeloes where move to the right and, taking great care, turn and take the fourth exit to retrace northwards on the a413. (m9, m10, m11) (check) sp896015 continue along the great missenden by-pass, straight through the first roundabout and moving to the right hand lane to take the second exit at the next roundabout (m2) 3.676 4.073 4.073 31.216 35.289 39.362 sp872068 to the roundabout at the southern end of the wendover by-pass 3.754 43.116 sp853086 take the second exit (m3), still on the a413 to the roundabout at the junction of the a413 and the b4009. 1.661 44.777 sp872068 circle the roundabout, (m4, m5 & m6) and retrace along the a413 to the roundabout at the southern end of the wendover by-pass 1.691 46.468 sp895016 take the second exit (m7) to continue on the a413 to a point 19 yards before the roundabout sign, approximately 250 yards short of the link road roundabout where finish. 3.532 50.000