The 2013 California Power Wagon Rally is coming up June 21-23 in Hollister, Ca.
The Rally takes place at the Hollister Hills SVRA (State Vehicular Rec Area). More info and registration can be found here:
http://dodgepowerwagon.com/main/events.html#cali
This is a great event. I've been going for the last 7 years and it is always one of the best weekends of the year.
There are trails for the beginning to advanced rig/driver. There are some amazing Power Wagons/Dodge trucks that show up. Check out the link for more info and registration.
Here are a few pics from last year:
Mountain Springs Power Wagon Service, Paso Robles, CA
1962 W100-340-LU2 winch
1964 W200-340-LU2 winch
1964 W300-318-LU2 winch
1965 W200 Crew Cab- Cummins Diesel