What’s the difference between Kaepernick and Steve Young? Young was really the first of the “running quarterbacks” when he started out in the league.
Kaepernick is a more accurate passer than young at this stage of his career. Young was very raw when he first joined the niners and developed his skills while waiting for Joe Montana to leave.
Bobby Douglass, who played for the Bears in the early 1970s, was a big strong kid who did a lot of running. Ran for close to 1,000 yards one year (in a 14-game season).
Fran Tarkenton, who played int he '60s and '70s, didn't run as much, but he was quite the scrambler.