|Location Map ( geo)|
|From:||Waycock Cross roundabout (ST096685)|
|To:||Jenner Road / Park Crescent (ST105677)|
|Distance:||0.7 miles (1.1 km)|
|Old route now:||A4226|
|Route outline (key)|
The B4266 runs along Pontypridd Road in Barry.
The road's current northern end is at the Waycock Cross roundabout, where the other three directions are all numbered A4226. Although this is the road's original northern end it was quickly extended north to the A48 at Bonvilston. The extension became the original route of the A4226 in the early 1970s.
From Waycock Cross the B4266 heads south into the Barry urban area. It ends less than a mile later on the A4050, although it originally continued on along the now-unclassified Romilly Road to meet the A4055 by the station.