I have not ridden it. But the pix I have seen look really easy. I have a couple of riding buddies that did it. Said it was mostly extremely easy on loaded bikes, with the exception of a mile or two of loose rocks. Like goat heads. They were on mostly large ADVenture bikes.
I've not been on it, but from the descriptions it appears to be mostly maintained Forest Service/BLM roads, so a stock 4runner should handle it with ease. I didn't see any mention of anything technical. Worst might be some slick clay in some spots if it's raining.
