Arapahoe Basin, had one run open as of yesterday, the beginner level High Noon, which winds down to the base from the Exhibition Lift.
The High Divide Terrain Park is also open.
A total of 20 acres is open at the hill with an 18 inch base.
Over the pass at Loveland Ski Area, Spillway, the short intermediate trail under Chair 1 opened on Friday, and Lower Richards Run, another intermediate was set to open today, according to Loveland marketing director John Sellers.
That's in addition to the beginner Mambo and Home Run trails that opened on Tuesday, Loveland's first day of the season.
Sellers said that with snow in the forecast Saturday and Sunday, more trails should be opening soon. Loveland also has an 18-inch base.
The other resorts in the area are gearing up for their respective seasons to start. Copper Mountain Resort is next in line, with a scheduled opening date of Nov. 2. Keystone and Breckenridge will follow on Nov. 9.