START approx 0.5 miles north east of Libanus at south end of 2nd lay by on A470. (GR 160 002266). Proceed North East on A470 to Brecon West roundabout; take 4th exit on A40 Dual Carriageway (Brecon Bypass) to Brecon East roundabout. Encircle roundabout taking 4th exit to retrace along A40 dual carriageway to Brecon West roundabout. Take 1st exit along A470 to finish at gateway opposite start.

https://ridewithgps.com/routes/46910750

Reverted to R10/15 in 2024.