A broken bicycle will be easy to repair. However, there could be a lot of other problems. Firstly, bicycles have a lot less carrying capacity than bikes and you would be limited by the amount of gears, clothes and other necessary things that needs to be carried. Next would be the problem of getting across. It would certainly be a more stretching itinerary. Lastly, if you are looking to be at a certain place before sundown, things can get hard. While you can always take a lift from an army truck, you need to be fortunate enough to find one accommodating enough.