The Kennet and Avon Canal from Reading to Bath measures 76 miles (123 km.). I take the train from Arnside on Monday, 08.07, and arrive in Reading for 12.39 where I am booked into a hotel. That will give me time to walk to where the canal meets the River Thames to the east of Reading and back again, so that I will be able to start on the canal directly from the hotel next morning walking west.
I bought a superb map on line (Heron Maps - Waterways Series - Kennet & Avon Canal and River Avon). This is a strip map, double sided at 1:50000 with more detail of relevance than you see on the equivalent OS map. The only trouble is its length - nearly two metres. If I try to open it up to re-fold in a high wind I may end up paragliding part of the route - just hope the wind is blowing from east to west.
Ports of call are Reading, Thatcham Froxfield, Honeystreet, Semmington and Bath.