Endeavour began a 4.2 mile trek from the Vehicle Assembly Building to Launch Pad 39B at 11:15 p.m. on Sept. 18. It reached its destination by 7 a.m. on Sept. 19. The journey took less than 8 hours, and the shuttle was securely fastened to the pad just before sunrise. After Atlantis lands, Endeavour will roll around to pad A for its STS-126 mission to the International Space Station in November. This is the first time since July 2001 that two shuttles have been on both launch pads at the same time. The distance between pads is 2,657 meters (8,715 ft).