how long ribs on grill
1 Grill your ribs for 3 hours bone-side down. 2  Wrap them in foil and grill, bone-side up, for 30 to 60 minutes. Same as with baby backs, you can an extra special touch here by pouring a cup of apple cider or juice into the foil packet.  Unwrap them and grill for 30 more minutes bone-side down.