COURSE: START on A15 Sleaford By Pass 0.25 miles South of Quarrington Roundabout (A15/A153/B1517) near field entrance with large tarmac entrance both sides of A15. Proceed South on A15 through Osbournby to Roundabout (A15/A52). Encircle Roundabout and retrace along A15 to FINISH approximately 80 yards short of lay-by sign (approx 1 mile going south) and 0.32 miles short of the Start.