The Hatfield House Loop cycling route heads up through North London via the Swains Lane climb in Highgate, and then heads directly up through Potters Bar to the Hertfordshire countryside just south of Hertford and Welwyn Garden City. The route passes Hatfield House before the southerly leg heads back to Regents Park via Hampstead Heath.
Starting point: Regents Park, Bar & Kitchen, London.
Suggested café: The Coach House, Hatfield House (45 km)