Outline the trip that you want to take. This includes the countries that you are looking to visit, how long that you will be there, where you will stay, how much each destination will cost and when you would like to go.
Do research on the countries that you are visiting to ensure that as a biker you are properly prepared. Research the language spoken, the area's landscape and terrain, and the weather during that time of the year. Make sure that your trip has the correct amount of difficulty and that the terrain is not too hilly or the weather too cold and damp.
Research the bike routes to ensure that it is safe for you to ride your bike in your chosen destinations and that you can get from A to B by bike. Make sure that there is adequate bike storage along the way so that you will always have a place to store your chosen mode of transportation.
Research the traffic laws of each country so that you don't put yourself in danger. Know the laws for bikers as well.
Get your equipment checked--including your bike, pump, spare tire and whatever else that you might need-so that they don't break down along the way.
Pack energy bars and some of your own food so that when you're exerting all that energy you don't get caught somewhere starving without the proper nourishment. Make sure that you have more than one water bottle to make the trip.
