Not sure where you are located, but this is convenient to OC and Riverside, San Bern areas:
Off the 91 at the 71N, first exit, go right (east) first left (about 1/4 mile) range is on right, pistol ranges are in the buildings, first one you come to is the one you want.
We shoot the first and third Sat of each month, starts at 8:30 am.
Cost is $12 for IDPA members, $15 for non members.
http://www.pradopistol.com/idpa/
For better directions, go to:
http://www.shootprado.com/
If you are farther South, like Oceanside/San Diego, go to IDPA website, they have a good club in Oceanside.