SR 277 is a 30.66-mile (49.34 km) highway that provides a direct route connecting Heber and Snowflake. It does not pass through any other cities or towns. The western terminus is located at an intersection with SR 260 east of Heber. The highway heads northeast from this intersection and curves towards the east prior to an intersection with SR 377. SR 377 heads northeast to Holbrook while SR 377 continues to the east. It heads east to an intersection with a spur route that provides access to a paper mill. SR 277 heads northeast from this junction and curves back towards the east as it enter the Snowflake city limits. The highway reaches its eastern terminus at an intersection sith SR 77 in Snowflake.