There are two harbors in San Diego: Mission Bay and San Diego Harbor. Assuming everyone is going to arrive at Avalon, the main harbor on Catalina Island, then there are 2 possible distances: Mission Bay to Avalon or San Diego Harbor to Avalon.
Enjoy the journey!!
How far is Catalina Island from San Diego?
Mission Bay to Avalon Harbor:
72 miles (or 63 nautical miles)*
San Diego Harbor to Avalon Harbor:
78 miles (or 68 nautical miles)*
*distances given are from the outer navigational buoys of each harbor
|straight line from Avalon Harbor to San Diego Harbor|
If you are a power boater you should follow this line, with a bit of wandering. If you're a sailor who wants to put the sails up, you will follow this line much less stringently. I have written a more thorough post, that approximates the time required to make this trip (based on a 30 foot sailboat).
|we hiked up to this Avalon overlook upon arrival|
If you are thinking about making this trip in a boat, you definitely want to have a boating guide book. Brian Fagan's book is the standard for boaters around Southern California. The Cruising Guide to Central and Southern California: Golden Gate to Ensenada, Mexico, Including the Offshore Islands There is a good section on boating in and around San Diego and tucking into anchorages around Catalina Island.