State Route 140 (SR 140) is an approximately 102-mile (164 km) state highway in the U.S. state of California. It begins in the San Joaquin Valley at Interstate 5 near Gustine, and runs east into the Sierra Nevada range, terminating in Yosemite National Park. Though maps and signs may show the highway extending east inside the park from its entrance to Yosemite Valley, this segment is federally maintained and is not included in the state route logs.