From Longman Dictionary of Contemporary Englishrun/stretch/walk etc the (full) length of somethingrun/stretch/walk etc the (full) length of somethingALL/EVERYTHINGto go or move from one end to the other of something The wall ran the full length of the garden. They walked the length of the pier. → length
Examples from the Corpus
run/stretch/walk etc the (full) length of something• I always enjoyed walking the full length of the street to check how the other shops were faring.• The loft ran the length of the house from front to back, and it was lit by two unshaded forty-watt bulbs.• Next door, the living room is large and beautifully proportioned, running the length of the house.• Then Red runs the length of the court, grabs a pass, drives to the basket and sinks one.• A faint scar ran the length of his left cheek.• I would have to walk the length of the shed to reach him. 