Complex sentence: It is a concession road, 5 concessions (10km) west of Yonge Street, and runs north-south through many residential neighbouhoods, most notably Mimico, and The Kingsway.
Split into simpler sentences: It is a concession road, 5 concessions (10km) west of Yonge Street. It runs through many residential neighbouhoods, most notably, Mimico, and The Kingsway.