David Carr last year (note he was hurt for 5 games) had 151 yards rushing on 27 attempts. His longest one was 36 yards and an average of 12.6 yards per carry/per game. 2 rushing touchdowns.
Joey Harrington had 86 yards rushing last year in all 16 games and 30 attempts with an average of 5.4 yards/per game. His longest run was 26 yards and he had 0 touchdowns.
The leader was Daunte Culpepper with 73 atempts for 422 yards averaging 32.2 yards per carry/game and had 4 rushing touchdowns with a long of 42.
Hope that helps a little.