START on unclassified road half a mile north of Grafton Underwood immediately before junction to farm access road. Proceed south, through Grafton Underwood to crossroads, where turn left onto unclassified road to Slipton. Follow road through Slipton past public house to junction with Kettering Road. Turn left and follow road towards Islip. At roundabout turn left along A6116 to Brigstock, where turn left onto unclassified road, through Brigstock village, turn left again over the small bridge to begin series of hills on the way to the finish. Finish at starting point.
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