After time out to let a hamstring know its proper place (that is, being unobtrusive) in the grand scheme of things, I returned to my circumcardinal route for the next easy section: Hatfield to St Albans along the Alban Way. The route follows the old railway line from Hatfield (just north of the station) to St Albans, at the Abbey station, which today only serves trains to Watford. I broke off just before the end to descend to the River Ver and follow the Ver-Colne Valley Walk into St Albans (next section follows that route, and the Hertfordshire Way, to Redbourn).
The Alban Way is straightforward, and is without stiles, and the one flight of steps, within Hatfield, has a ramp alternative. In no way demanding, but almost exclusively a green corridor with a bus route easily accessible just to the north.