I cycled from Spiers Wharf in Glasgow to Ratho Climbing Centre on the Forth and Clyde, then Union Canals. Came off at Wynchburgh to try to avoid the motorbikes but they got me at Broxburn.
As I knew, the puddles from Possil March Nature Reserve until just before Falkirk were atrocious. before Twechar there is a gate that if anyone does this trip in all but high summer they should lift their bike over and use the quiet road that will take you all the way to Twechar where you can re-join. Highlights for me - pigeon loft at Maryhill, Nolly Brig [purely personal nostalgia], Cadder Kirk, Craft Daft on a Raft [after Cadder], the amazing schools and college either side of the canal at Kirkintilloch and the connecting bridge, bagpipes at Wyndford [western half Wyndford - many names repeated across the 60 miles], the Falkirk Wheel [only takes 8 kettles worth of power to work it did you know?] three deer beyond the Falkirk Wheel. Niddry Castle [note - West :Lothian Niddry] in the gloom. Even the outdoor drinkers of Possil and the broxburn boy racers were all well behaved.
THe eastern half was significantly more dry, both in terms of waterlogging and replies to my cheery bonhomie [or irritating friendliness]. THere were more cyclists in the East. Both of these could be due to weather being very wet in Glasgow [it did follow me across but the downpour we experienced Sunday 02.10.11 was in Glasgow 01.10.11 big style]].
I see the canal/s being used in schools and it could be used more - flora, fauna, economic and social history, geography, architecture, class war, Burke & HAre, engineering, fun.
I did the route on my 3 spd upright It took one hell of a beating. It is not a route for drop handled bikes with skinny tyres [the only one of these that I saw had a puncture, well I saw one other at Falkirk Wheel - EBC tourer but it was suspiciously clean and went back on the road]. Many detours as I am convinced there is a more efficient route from the Canal beyond Linlithgow coming east to Balerno [but maybe no way of avoiding the hill at the end]. 6 hours tops. But on a dry day with wind behind, and fewer detours could be done in 5 hours. There are many gates and bridges but also many long flat stretches. The width of the path varies, on the whole wider in the east. Two good tunnels, three good aqueducts [if you count Longstone].