High Quality Content by WIKIPEDIA articles! Commonwealth Avenue (Tagalog: Abenida Komonwelt), formerly called as Don Mariano Marcos Avenue, named after the father of President Ferdinand Marcos, is a 12.4 km (7.7 mi) highway located in Quezon City, Philippines which spans from 6 to 18 lanes and known as the widest in the Philippines. It is one of the major roads in Metro Manila and is designated as part of Radial Road 7 (R-7).