The Free On-line Dictionary of Computing (19 January 2023):

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)


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).