The canal towpath is very narrow for some stretches between Devices and Bradford on Avon. Perfectly cyclable but you might end up negotiating pedestrians, dogs etc.
That's my experience too. I'm no lover of surfaces that aren't tarmac anyways, but I found it very stop-start / get off and be over-polite to a big group of ramblers etc. Took bloody ages in high summer
Yep, the towpath and to some extent the bath-bristol cycle path will be busy during the school holidays. It will be more pleasant than the roads but it may be slow in places.
The canal towpath is very narrow for some stretches between Devices and Bradford on Avon. Perfectly cyclable but you might end up negotiating pedestrians, dogs etc.