There are
1,554 mi
from Richardson, TX to Paso Robles, CA
That's the driving distance. It would take 1 day 3 hours to go from Richardson, Texas to Paso Robles, California.
The flight distance (direct flight from Richardson, TX to Paso Robles, CA) is 1,376.86 mi.
1,554 mi = 2,501.67 kms