Karlsruhe, Baden-Baden, and Freiburg are served by fast ICE trains zipping between Frankfurt-am-Main and Basel in Switzerland. Regional express trains also link these hubs with many other places locally, including Freudenstadt, Titisee, and, in particular, the spectacular climb from Baden-Baden to Triberg, one of the highest railroads in Germany.
Local lines connect most of the smaller towns. Two east–west routes—the Schwarzwaldbahn (Black Forest Railway) and the Höllental Railway—are among the most spectacular in the country. Many small towns participate in the KONUS program that allows you to travel for free on many Black Forest train lines while staying in the region. Details are available from Deutsche Bahn.
Deutsche Bahn. 11861; www.bahn.de.