Presented by

USAT sanctioned event!.... If you are not an annual member you can purchase a one day USAT membership when you p/u your race number....click here USAT membership info

Saturday, April 17, 2010 at 7:30 AM.

( Don't forget "Big Rock Tri" will be held again October 16, 2010 [Registration opens for Oct. event in April of 2010] )

The Big Rock Triathlon is staged in an area that is only a short drive from Los Angeles, Orange County and San Diego. It is also close to the Ontario Airport for those athletes traveling from Northern California or other states and countries. The course will Be flat and fast with a calm lake swim, 2 short climbs (Big Rock OD only) on the bike and a flat out and back run. Limited to the first 800 entrants.

Click here to download Triathlon entry form in .pdf format.
or
Enter online at www.active.com Big Rock or Big Rock Sprint

Race Categories

The B R Triathlon offers the following race divisions:

• Age Groups (5 year increments)
• Clydesdale (200 lbs +)
• Military