It was certainly more "good luck" than "good judgement".
While it's true that the runway didn't supernaturally grow to accommodate them, their state of knowledge about the distance to the end of it was a divine mystery at the point they decided to land there. The fates' scissors stayed open this time. The piece of good judgement was in choosing to stop with all urgency once that mystery become apparent.
Careening off the side, or catching fire would have been as likely anywhere - that would have been very very bad luck indeed.