National Route 57 of the National Cycle Network will run between Cricklade in Wiltshire and Welwyn Garden City in Hertfordshire via Oxford. Most of the route between Cricklade and Oxford is still awaiting development.
Open sections: The route is opened and signed between Oxford and Chesham with the main traffic-free section being the Phoenix Trail between Thame and Princes Risborough.
The traffic-free Nickey Line is open between Hemel Hempstead and Harpenden.
Wheathampstead to Welwyn Garden City is open on the Ayot Greenway joining National Route 12 into Welwyn.
Maps and leaflets for this route are detailed below the map:
Thame to Princes Risborough is shown on the free "Phoenix Trail" leaflet available from Sustrans, tel: 0845 1130065 or download.
Hemel Hempstead to Harpenden is mapped on the free "Nickey Line" leaflet available from Hertfordshire County Council, tel: 01727 848168 or download from Hertfordshire CC website.
Wheathampstead to Welwyn Garden City is shown on the free "Ayot Greenway" leaflet available from Pedal Point, tel: 01707 357551 or download from Welwyn Hatfield Borough Council website.