Raccoon River Valley Trail (RRVT) is a rail trail running 56 miles (90 km) from Waukee, Iowa, to Jefferson, Iowa. In 2013, an additional 33.1-mile (53.3 km) north loop was completed on the RRVT, making the RRVT nearly 90 miles (140 km) of paved trails and having a paved interior loop of more than 72 miles (116 km). The 39-mile (63 km) portion of the trail from Waukee to Herndon is part of the American Discovery Trail, which runs between Cape Henlopen State Park in Delaware and Point Reyes near the Bay Area of California. In Iowa, the American Discovery Trail will be concurrent with U.S. Bicycle Route 50 (see United States Numbered Bicycle Routes).