It's been many years, but I sailed from HB CAL many times. If I remember my Charts correctly, From HB to Catalina is about 25 miles. San Diego, is not much different, let's say 28 miles. From HB, when you are going about 4 it takes about 7 hours. Look at a chart for the miles. One word of warning!!!, The main port is Avalon Harbor. About 2 to six miles north of Avalon, their are some rocks, at high tide, just under the water.
At night, in fog, or on a perfect sunny day you will hit them, and they will sink your boat. The last time I was their, there were no markings, warnings, and they are just off shore, where you would be sailing.
Get some Charts, find the distance, and the rocks, it's a beautiful place, Happy Sailing.
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