That depends on the temperature of your grill, the thickness of your patties, and your personal preferences. However, a good rule of thumb is to aim for about 5-7 minutes per side.  For the best results, make sure your grill is preheated and your grates are cleaned and oiled.  Avoid flipping these pork and beef burgers too much, or they could fall apart. One or two flips will do the trick!