Start on A38 in northern end of layby (GR695963) approximately half a mile South of Newport.
Proceed north on the A38 through Berkeley Road and over the railway bridges to the Slimbridge roundabout where turn (5.3 miles).
Circle and retrace south on the A38 to finish on opposite side of the road to a bus stop just South of Newport (GR698971) approx. ¼ mile before the start.