There are several walking and cycling paths in and around Harpenden including part of the National Cycle Network along the Lee Valley Line this will take you all the way to Luton heading north (be aware that there is a road to cross at East Hyde) or to Wheathampstead in the opposite direction. Good starting points are by the Amble Inn at the bottom of Station Road and the Red Cow down Westfield Road. You can also walk or cycle the Nickey Line (see separate listing), which will take you to Redbourn and then on to Hemel Hempstead. And there are trails from the Nickey Line that will take you through the Rothamsted Estate (please be aware that this is a research centre so please stick to the paths) and to Rothamsted Park (the Rothamsted Trail).