The big difference is that cumulative is far more common than accumulative. At the level of actual meaning, to the extent that accumulative is used at all, it tends to refer to someone/something doing the accumulating. By contrast, cumulative is more associated with that which is accumulated.
Driving distance from Crescent City, CA to Eureka, CA. The total driving distance from Crescent City, CA to Eureka, CA is 84 miles or 135 kilometers. Your trip begins in Crescent City, California. It ends in Eureka, California.
Driving distance from San Francisco, CA to Eureka, CA. The total driving distance from San Francisco, CA to Eureka, CA is 272 miles or 438 kilometers. Your trip begins in San Francisco, California. It ends in Eureka, California.