State Route 377, also known as SR 377, is a state highway in northeast Arizona traveling from northeast to southwest; it begins at a junction with State Route 77 south of Holbrook, goes past Dry Lake, to end at State Route 277 east of Heber-Overgaard.

SR 377 is a 33.83-mile (54.44 km) highway in eastern Arizona.

The southern terminus of the highway is located at an intersection with SR 277 northeast of Heber.

It reaches its northern terminus at an intersection with SR 77 south of Holbrook.

[1][2] State Route 377 was defined by the Arizona Department of Transportation in 1971 exactly the way it is now.