If Chase runs 5 miles in 60 minutes, how far will he run in three hours if he continues to run the same rate?

If Chase runs 5 miles in 60 minutes, and there are 60 minutes in an hour, then he runs 5 miles per hour. In three hours, he would run 5 miles/hour * 3 hours = <<5*3=15>>15 miles. Answer: \boxed{15}.