(This course is essentially two and a half circuits of Hardwick/Cambourne/Madingley).
START at the end of the Armco on the westbound A428 on-slip from Hardwick, proceed on A428 westbound to exit at Cambourne off-slip to:
TURN by taking third exit at first RAB, cross over A428 to second RAB, where take third exit to re-join A428 eastbound. Proceed on A428 past Hardwick and bear left onto A1303, signed Cambridge to:
TURN at Madingley RAB, taking fourth exit to re-join A428 westbound. Proceed on A428, past Hardwick to exit at Cambourne off-slip to:
TURN (for second circuit) by taking third exit at first RAB, cross over A428 to second RAB, where take third exit to re-join A428 eastbound. Proceed on A428 to:
TURN at Madingley RAB, taking fourth exit to re-join A428 westbound. Proceed on A428, past Hardwick to exit at Cambourne off-slip to:
TURN (for third time) by taking third exit at first RAB, cross over A428 to second RAB, where take third exit to re-join A428 eastbound. Proceed on A428 to:
FINISH at second lay-by, at paint mark level with first drain grid past first drain gulley in raised dividing strip. [MM Comment: This is the same finish as used by the F2A/15]]
Note: The Start/Finish points are subject to possible slight amendment