Kansas had the shortest historic U.S. Route 66 segment.
Route 66 crossed only about 13 miles of Kansas, making the state’s section the briefest among the eight states on the historic highway. Even so, that short stretch included several memorable communities and landmarks, including Galena, Riverton, and Baxter Springs.
The Kansas alignment entered from Oklahoma and continued east toward Missouri. Its small size makes it easy to overlook on a cross-country map, but preservation efforts have kept important pieces of the road and its roadside history visible. The Rainbow Bridge near Riverton is one of the state’s notable surviving Route 66 structures.
Mileage figures can vary slightly because Route 66 had alternate alignments and was revised over time. The state comparison refers to the historic route’s commonly cited mileage breakdown, not to every modern road carrying a “66” designation. Kansas remains the shortest state segment even though the whole highway once extended for roughly 2,448 miles.