When do Summit County Ski resorts (breck, vail, copper, etc) typically open 100% of their ski acreage?

Question

In a normal ski year, when do the Summit/Eagle County Ski resorts (Breckenridge, Vail, Beaver Creek, Keystone, Copper A-Basin) typically open 100% of their acreage?

I know the early part of this ski year was slow... I am wondering how far behind the ski resorts are compared to a normal year.

Answer 1

They typically aim to have everything open by Christmas- when the big crowds come in....but of course, no guarantees...(but after this week, it looks like that just might happen!)

Answer 2

Mid to late December. Still some exposed rock  and trees then too.

Answer 3

late December to april