their website says 7000 for the 72 mile (6000 for the metric).. but i logged 6540 ascent according to my polar for the 72 mile route last year.... that is a REALLY pretty area! loved the alpacas across from one of the rest stops!

i would highly recommend alpine challenge.. it's a great ride... gorgeous area (as bikerchick said!) and the support is wonderful... TONS of food.. water... etc! i'm really upset that it falls right between 2 climbing centuries (that i need to do to get king of the mountain) cuz i want to do it again.. and hubby really wants to do it this year (bum knee last year)