The 49ers, masters of the extended road trip in Jim Harbaugh's first two seasons, will add a few times zones to their annual long trek in 2013: They're going to London.The NFL announced today that Jacksonville will host San Francisco on Oct. 27, 2013, at Wembley Stadium. It will mark the 49ers' second appearance in the league's International Series in four seasons. They beat the Broncos, 24-16, in London in 2010.