There are
1,500 mi
from Rosenberg, TX to Walnut, CA
That's the driving distance. It would take 1 day 1 hour to go from Rosenberg, Texas to Walnut, California.
The flight distance (direct flight from Rosenberg, TX to Walnut, CA) is 1,328.68 mi.
1,500 mi = 2,414.33 kms