National Highway 275 (NH-275), also commonly referred to as Bengaluru–Mysuru access-controlled Expressway, part of the Bengaluru–Mangaluru Economic Corridor (EC-34), is a national highway that starts from Bengaluru and goes through Mysuru as a 6-lane expressway of 119 km (74 mi), and again as 4-lane till Bilikere, and ends at Bantwal. This highway connects the coastal city of Mangaluru to Bengaluru. It is also a bypass route for the National Highway 75 (NH-75). The Bengaluru to Mysuru section of this highway was upgraded from 4 to 10 lanes, out of which the 6-lane section is the main elevated access-controlled carriageway and the other 2-lane section on both ends of the carriageway are service roads. It claims to reduce the travel time between Bengaluru and Mysuru from 3 hours to 75 minutes.

Mysore, officially Mysuru, is the second-most populous city in the southern Indian state of Karnataka. It is the headquarters of Mysore district and Mysore division. As the traditional seat of the Wadiyar dynasty, the city functioned as the capital of the Kingdom of Mysore for almost six centuries. Known for its heritage structures, palaces, and its culture, Mysore has been called the "City of Palaces", the "Heritage City", and the "Cultural Capital of Karnataka". It is one of the cleanest cities in India according to the Swachh Survekshan.