I'll be cycling from Perth to Edinburgh soon, and am tempted to go via Mawcarse and the eastern side of Loch Leven, rather than west through Milnathort and Kinross, to get away from the motorway for at least part of the journey. It adds a couple of miles, but is a bit less hilly.
Has anyone cycled the route east of Loch Leven, and is there any reason why it wouldn't be a good idea?