Goole to Wakefield and Leeds. Part canal, part river. East of Castleford it’s mostly unimproved grassy towpath and unsuitable for cycling. The navigation splits into two branches at Castleford. The branch towards Wakefield has an excellent, newly surfaced towpath from Altofts and Stanley Ferry to Wakefield. The branch to Leeds has a reasonably good compacted surface from Methley into Leeds.
Wakefield to Sowerby Bridge. Again, part river, part canal. River sections not rideable. Canal sections east of Brighouse are unimproved but can be cycled if you don’t mind the bumps. Brighouse to Sowerby Bridge has been paved as the Calder Valley Greenway and is a superb route (NCN 66).
Ripon to York and the Humber. No cyclable towpath. The Transpennine Trail and other NCN routes run parallel.
Selby to Castleford. Unimproved grassy towpath other than a short section in Selby itself which forms part of the Trans-Pennine Trail.
Keadby to Sheffield. No rideable towpath for most of its length. The (often bumpy) Trans-Pennine Trail runs parallel in several places. Cyclable with a firm earth surface between Rotherham and Sheffield.