How long does it take a sail boat to sail from Hawaii to California?

This all depends on how fast the sailboat can travel. Speed is measured in knots. 1 knot of speed is equal to 1 nautical mile per hour. The distance from San Francisco, CA to Hawaii is approximately 2400 miles. Let's say your sailboat averages 5 knots. Divide 2400 miles by 5 miles per hour, and you get 480 hours from San Francisco, CA to Hawaii. Then divide 480 by 24 hours per day, and you get 20 days. Therefore, if your sailboat traveled at 5 knots nonstop from San Francsico, CA to Hawaii, it would take you 20 days to sail there.