There are
2,510 mi
from St Petersburg, FL to Rancho Cucamonga, CA
That's the driving distance. It would take 1 day 19 hours to go from St Petersburg, Florida to Rancho Cucamonga, California.
The flight distance (direct flight from St Petersburg, FL to Rancho Cucamonga, CA) is 2,106.40 mi.
2,510 mi = 3.22 kms