Okay, I'm in WA but every year for memorial day weekend we head out to Hotsprings, MT near Kalispell for the mud boggs. My friend's uncle puts it on every year, and each year is a bigger and bigger turnout. The races are 2 days, first day is a drag race through the mud troughs, second day is an obstacle course. There's a bit of quadding, too. There's everything from nitrous powered mud rails, 4/6 cylinder, v-8, heavily modded, pretty much everything there. Last year was a Toyota with a 350 in it running a 100 shot of nitrous. I'll try to find some pictures from last year, and maybe they will have the fliers for this year done.