Tired_Old_Man 1 Posted March 4, 2007 Parallel Runways Due to the Jumbo being 3 times larger than the 757 and being behind, gives the fantastic optical illusion of seeming to fly very near to each other. A Lufthansa 747-400 and a United 757-200 were both on final approach to the parallel runways 28L and 28R at SFO. The actual runway separation is 225 meters. Share this post Link to post Share on other sites