Our flight arrives about 8am so we were thinking of catching a bus or train to close to the start of the walk then heading out. I figure by the time we pick up baggage, clear customs and get to the start of the walk it will be about noon. Does this seem feasible? Our guide book does give a route from downtown Glasgow to Milngavie so if nothing else we could do that section. We're also thinking of making side trips from some of the overnight spots such as Rowardennan to walk up Ben Lomond. Any other suggestions for side trips not to be missed?