2000 feet where the temps gets back to around 75F... down at sea level tyically 84F or so....There are a few ways up, the offical cycle to the sun route, or there are a few other roads to get you up to the 1700-2100 foot area, after that there is only one road to the roof... have some $$ on ya, if I remember right last year it was either $5 or $10 and the pass was good for a week....