In my last installation I ran 35' of interconnect in the crawl space with no issues but one thing to bear in mind is making the entry/exit to the floor look nice while still keeping creepy crawlies out -- I found these products used in clean rooms to be a good thing to use
https://www.accessfloorsystems.com/index.php/raised-floor-cable-seal.html
(search for brush grommets)
https://www.accessfloorsystems.com/index.php/raised-floor-cable-seal.html
(search for brush grommets)