Exploring on Two Wheels -- Unique in Germany, the Neckar Valley Cycle Path allows you to ride all the way from the source of the Neckar, in Villingen-Schwenningen, 375km (233 miles) to the confluence of the Rhine at Mannheim. The path is marked with a signpost showing a green bicycle and a red wheel mark. The route follows the river the whole way, though many cyclists go only as far as Heidelberg. Along the way, you'll pass castles, manor houses, vineyards, country inns, and such old towns as Rottweil and Esslingen. Most cyclists average about 50km (30 miles) per day on the trail.
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