There are
1,115 mi
from Tacoma, WA to Monrovia, CA
That's the driving distance. It would take 21 hours 3 mins to go from Tacoma, Washington to Monrovia, California.
The flight distance (direct flight from Tacoma, WA to Monrovia, CA) is 934.71 mi.
1,115 mi = 1.61 kms