Grand Italian Trail

For a whopping 3,832 miles, the Sentiero Italia (or Grand Italian Trail) extends from the Northeastern port town of Trieste, into the Alps, and all the way down the Apennine spine of the Italian peninsula before island hopping to Sicily and then Sardinia. The subalpine scenery along much of this route is simply spectacular, featuring jagged peaks, glacial tarns, and gouged out valleys. Add to that the bonus of quaint hamlets and ancient Roman history, and you ve got yourself a bella formula. Oh, and of course, carbo loading will never be a problem.