Hertfordshire Chain Walk
This walk is a series of 15 circular walks which link together to create a chain, running from the northern edges of Enfield to Cambridgeshire. There may be an "official" start, but with the walks being circular they can be started from any point and walked in either direction.
I estimate the total length of the 15 stages to be 145.7 km.
My walks on the Hertfordshire Chain Walk
Total walked so far: 87.0 km, or about 60% of the path
Hertfordshire Chain Walk links