K-19 (Kansas highway)

K-19 is a 33.915-mile-long (54.581 km) state highway in the U.S. state of Kansas. From U.S. Route 50 (US-50) to K-19 Spur it is signed as north–south and from K-19 Spur to US-281 it is signed as east–west. K-19's southern terminus is at US-50 in Belpre, and the eastern terminus is at US-281 east of Seward.

Before state highways were numbered in Kansas, there were auto trails. The southern terminus follows the former New Santa Fe Trail. The northern terminus of K-19 Spur follows the former National Old Trails Road and Old Santa Fe Trail. K-19 was first designated in 1926, and at that time started in Belpre and ended in Larned. Then between 1931 and 1932, K-19 was extended east, from south of Larned, along the former K-37 designation to K-8, now US-281.