The route takes you on quiet roads (but very steep in places) past Llandegfedd Reservoir and through the villages of Coed-y-Paen (check out the phone box), Llanbadoc, Usk, Raglan and Dingestow.
Both Usk and Raglan have shops and pubs for refreshments. Arriving in Monmouth the route crosses the river Wye and follows the Peregrine Path (pdf) along the Wye valley north to Symonds Yat East.
Here there is a canoe hire centre and inviting waterholes including the Saracens Head Pub.
The area is also the gateway for a steady climb to Symonds Yat Rock where nesting Peregrine Falcons can be spotted. Leaving Symonds Yat the route continues on to Goodrich.
The route between Cwmbran and Monmouth is for more experienced cyclists.
Distance: 28 miles
Type: A mixture of traffic free paths and quiet roads
Things to see and do
This area map shows the National Cycle Network and local routes in this area.
Route 423 follows the former Regional Route 30 and the Peregrine Path from Cwmbran to Ross via Monmouth.