It takes anywhere from 10 – 15 minutes depending on the temperature of your grill and cold and hot spots on your grill. At 400 degrees F (204 degrees C) it took us about 10 minutes for us to have beautiful crispy grill marks on both sides and an internal temp of 165 degrees F (73 degrees C). The most important parameter is having the juices run clear and the temp to be at least 165 degrees according to the USDA.