I hired a car and drove out to Boulder (30 mins from North vegas) to ride in Bootleg Canyon for the day, when in a similar situation on a work trip. Epic dusty trails. The bike shop in Boulder were friendly, did hire (I spent the day on a mint GT enduro bike thing, a Sanction? – they even swapped the brakes over to “Moto style”), though I took kit/helmet/kneepads to ride in. It is HOT and DRY though, I burned through my water really quick (went last Feb, so riding Whinlatter on the Friday in the snow, then Monday in a desert was a bit of a shock to the body). Take a bag, take more liquid than you expect.