Update: The Salo movie from 2018 clearly is now canon and established how in fact the run can be done.
“You’ve never heard of the Millennium Falcon? … It’s the ship that made the Kessel run in less than 12 parsecs.”
Now that the Star Wars canon has had a shake up, a lot of things that used to be considered canon are no longer the true version of the story.
The script for A New Hope reads:
The novelisation of the film however did pick up on the use of the word and changed the distance measurement to “standard time units”.
Now, you might think that the mention of the famous run in The Force Awakens addresses the issue. THink carefully about this and you will see it's not the case. The Force Awakens did not explain how the Kessel Run was achieved, it merely referenced it.
Paul Rose Jr has worked as TV News Producer, Forensic Analyst, and Train Conductor, among many other things. He’s the former TV Editor for Infuzemag.com and owns more books, DVDs, and comics than most people have seen in their lifetimes. When he’s not writing articles, he exercises his creative muscle writing screenplays and acting in film and television in Los Angeles, CA.