A466 road about long and runs through the counties of Herefordshire and Gloucestershire in England, and Monmouthshire in Wales. It runs south from Kingsthorne, on the A49 south east of Hereford to Monmouth, crossing the A40. After crossing the River Wye at the Wye Bridge, Monmouth and Bigsweir Bridge near Llandogo, it follows a picturesque route south down the Wye valley through Tintern and Chepstow to the M48 motorway at junction 2. The road crosses the border between England and Wales at three places along its length: at Buckholt, Redbrook, and Bigsweir. It runs through an Area of Outstanding Natural Beauty, and
River Wye during the event WYE FLOAT, opened by former Olympic ski jumper Eddie the Eagle. The Environment Agency is the navigation authority for the river. The Normal Tidal Limit (NTL) of the river is Bigsweir and navigation below this point is under the control of the Gloucester Harbour Trustees as Competent Harbour Authority. There is a public right of navigation downstream from Hay-on-Wye. Canoes are generally permitted at and downstream of Glasbury, so long as they do not disturb anglers. The River Wye provides for canoeing and kayaking as it has sections suitable for all ranges of skills and free access