|Length:||8 miles (12.9 km)|
|Met (1932):||A32, A415|
|Now part of:||B481|
|Route outline (key)|
Starting in Caversham, in the ever-growing suburbs of Reading, the road headed north. It passed through Sonning Common before a few bends took the road to Peppard Hill, where it climbed up into the Chilterns. The road continued north along the top of the ridge and passed through Highmoor before a wooded section took it to its northern end at Nettlebed, where it ended to the east of the village centre.
Today, the road has been downgraded to a southern extension of the B481.