We started on April 9 on bikes and finished May 3 in Santiago. In the big cities (Sarria, Leon, Pamplona) make sure and lock your bike. Two of our bikes were stolen in Leon. We got used to the small towns where there is no appreciable crime. There is crime in the big cites, just like the US. The best stretch to rent a bike in my opinion is on the meseta. It is a plateau cut by dozens of rivers. You bike up the hill (most of them are no more than 350 meters, then it is flat for awhile then you bike downhill to the next river. Then up the hill again, lather rinse repeat. It is pretty boring, it looks like eastern Washington state.....