The Jargon File (version 4.4.7, 29 Dec 2003):
hacking run
 n.
    [analogy with ?bombing run? or ?speed run?] A hack session extended long
    outside normal working times, especially one longer than 12 hours. May
    cause you to change phase the hard way (see phase).
The Free On-line Dictionary of Computing (30 December 2018):
hacking run
    (Analogy with "bombing run" or "speed run") A hack
   session extended long outside normal working times, especially
   one longer than 12 hours.  May cause you to "change phase
   the hard way".
   [Jargon File]
   (1996-08-26)