start at small lay-by on the seagry road 1/2 mile north of sutton benger. proceed north through seagry heath and great somerford. turn left in little somerford to junction with b4042 where turn left. proceed to malmesbury hospital r/a, circle and retrace on b4042 through brinkworth at wootton bassett coped hall r/a (junction with a3102), circle and retrace on b4042 back at malmesbury hospital r/a, take first exit on a429 for approx 0.8 mile. turn left into grange lane. proceed through startley. finish at old field gate 1/4 mile north of cross roads at upper seagry. no u turns at finish.