This cool interactive listing of the highest roads by state in the U.S. is worth bookmarking on your phone. If you happen to find yourself riding across, say, Utah (fifth-highest road in the U.S.), a click on the listing will bring up a map and another click will get you directions from wherever you are. There’s no app, but it’s simple and fun, and just might direct you to some great roads on your next tour. More info: Geotab – America’s Highest Roads