Easy leisurely walk from Hertford North Station through woods, past St Leonards Church with its Norman apse, along the River Lea to Ware. Either an early lunch stop or a coffee stop in Ware, returning along the New River, past its source and back into Hertford. It may be muddy in parts. A hill to start with, then fairly flat and generally good paths although a bit uneven along the New River. There are plenty of cafes in Ware for lunch or a snack, but if you prefer bring a packed lunch.
There are toilets at Hertford North station. There are no public toilets in Ware - which is why going into a pub or café is a good idea! There is parking in the roads nearby or parking in the car park opposite the station. For this, however, you need the parking app Apcoa which should be downloaded beforehand.