In my attempt to get out of the house today, I cycled along the Cam towpath until about here by which point I was bored of the decreasingly friendly path and carrying my bike over stiles. I then wandered back along fenland farm roads until I found Swaffham Prior and the B1102 back to Cambridge. Very peaceful cycling along the river, in future, I wouldn't bother past Clayhithe though, that's really the point where the path becomes very much just a footpath. The worst bit was cycling home all the way across Cambridge, having come in on Newmarket Road, I didn't really have the acceleration left for town cycling.
Now to find a cooling shower, then maybe a bath, then maybe another shower.