There are
3,044 mi
from Warwick, RI to Vallejo, CA
That's the driving distance. It would take 2 days 6 hours to go from Warwick, Rhode Island to Vallejo, California.
The flight distance (direct flight from Warwick, RI to Vallejo, CA) is 2,667.03 mi.
3,044 mi = 4.83 kms