In reply to Humphrey Jungle: Recently rode from Glasgow through to Alloa. Went out via Lennoxtown and over the Crow Rd. From there, down the Carron Valley. At Carron Hotel, slant left which takes you through to Bannockburn. Once at the other side of Stirling, pick up the NCR to Alloa. From there you can go round Clackmannan to Kincardine village. Carron Valley road surface leaves a lot to be desired. As an alternative, you could go through Fintry and over to Kippen then pick up A811(?) to Stirling.