Best in the desert puts on two races in Parker each year, one is a real 250 mile desert race, the other is a GP at the casino. Their other desert races are in nevada.
I think grinding stone puts on some kind of enduro type stuff, not positive though. There is also an organization who puts on a desert race in page on the same track that whiplash uses. I believe they are out of Utah.
hope that helps.
Thx: KMS Performance, Motowoz, Hyper Wheels
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