West Highland Way on a bike

The West Highland Way is 152km (95 miles) long. The walk links Milngavie to Fort William - from the outskirts of Scotland’s largest city to the foot of its highest mountain, following the shores of its largest freshwater loch.

I have walked it and it is fantastic. I read a magazine artcile a while back about people who were riding it in a day (or two) and thought that it would be a perfect challenge.

I can't see how you can cycle the banks of Loch Lommond so I am not sure of the route. Does anyone have any info?