Don't remember the mileage, but we did IAH-EFD and IAH-HOU in Brasilias, ATR's , B-1900's and E-145's at COEX (XJT for you young 'uns). The Brasilia was so much work that some of the guys wouldn't even put the gear or flaps up if the dep. was 15's (which it almost ALWAYS is).
I think the shortest I remember IAH-EFD was 7 minutes takeoff to touchdown. You could do it in :11 in an ATR, and that was one slow bird.