In reply to alexkitts:
Have done it extensively in the nineties with close to everything - climbing & camping equipment including trad gear, ice axes, crampons & food for a week - some 40+ kgs all across the alps, to norway, the pyrenees ... some 100000km alltogether.
Take a girlfriend with you, makes hitching so much easier in every respect ...
Lots of time and select a few venues where you do not need transport.
Worst experience: being stranded close to barcelona for 9 hours. Best lift: salzburg directly to chamonix, first car. You never know.
And enjoy!
Post edited at 22:36