Start in lay-by at St Arvans, outside Little Trees Nursery on the A466 – what3words – herbs.burglars.snake

Follow the A466 south to Chepstow Racecourse Roundabout @ 0.9miles

Enter roundabout, taking third exit heading back towards St Arvans remaining on the A466

Finish line @ 1.8miles at lane access to waterworks – what3words – harmlessly.recap.steeped