There are
2,801 mi
from St Petersburg, FL to Lathrop, CA
That's the driving distance. It would take 2 days 2 hours to go from St Petersburg, Florida to Lathrop, California.
The flight distance (direct flight from St Petersburg, FL to Lathrop, CA) is 2,330.42 mi.
2,801 mi = 4,506.96 kms