There are
858 mi
from Lake Havasu City, AZ to Eureka, CA
That's the driving distance. It would take 16 hours 24 mins to go from Lake Havasu City, Arizona to Eureka, California.
The flight distance (direct flight from Lake Havasu City, AZ to Eureka, CA) is 692.40 mi.
858 mi = 1,381.44 kms