If you are looking for a great series of events to participate in this summer, check out Big Blue Advenure Racing. They hold a number of events. I went to one of their events in Half Moon Bay. It was well run and there was a large field of participants.

www.bigblueadventure.com

Besides the great Big Blue Adventure Race Series there are several other Series and Individual Races:

NORTHERN CALIFORNIA RACES AND SERIES

NorCal Adventure Race Series | Offers Beginner to Advanced Courses
http://www.norcal-ar.com

Big Blue Adventure Race Series | Offers the largest variety of races in the California
http://www.bigblueadventure.com

San Francisco Night and Day Urban Adventure Race | Offers several courses of varying difficulty
http://www.nightanddaychallenge.com/links.asp

San Francisco Oyster Urban Adventure Race | Raise money for a good cause and race around SF for the day
http://www.oysterracingseries.com/San-Francisco…

Bay Area Adventure Racing Babes and Dudes (BAARBD) | holds small training races often
http://www.baarbd.org

CENTRAL CALIFORNIA RACES AND SERIES

Gold Rush Adventure Races | Offers Beginner Course in the Summer and Advanced in the Fall
http://www.teamkarma.com

Central Coast Challenge aka the Dawn to Dust 12 Race | Offers Begginer and Advance Races http://www.ccadventure.com

SOUTHERN CALIFORNIA RACES AND SERIES

Scout Adventure Race | These are challenging short sprint races
http://www.scoutar.com/

Sierra Adventure Sports Desert Dash Series | a sprint race typically near San Diego plus others in Nevada and Arizona
http://www.SierraAdventureSports.com

Southern California Adventure Racing Buddies (SCARABS) | holds small training races often
http://scarabs.homestead.com/

In 2009, most of the series above will be back with at least one new series for Northern California plus GoldRush will host a four day expedition adventure race in the Sierra Nevada Mountains of Central California. I for one am starting to explore the possiblities of what the race may entail with TOPO!