Kill occupants of building, move 1.3 cubic meters of gold in 30 trips with transport van. Now you have a few other problems, such as making sure that you're not going to end up in the same way. Besides surveillance cam footage recording your whereabout during part of your trip and the distance being fairly easily estimated if you do two trips in quick succession leading to a possible ID and or location of the stash.

But getting it out of there is fairly easy if you lack a conscience and have a van. If you had access to a slightly larger truck it would be easier still.