Miles between Boise, ID and Grass Valley, CA

There are
507 mi
from Boise, ID to Grass Valley, CA

That's the driving distance. It would take 9 hours 20 mins to go from Boise, Idaho to Grass Valley, California.

The flight distance (direct flight from Boise, ID to Grass Valley, CA) is 393.10 mi.

507 mi = 815.97 kms