Copper is one of six Summit County Colorado ski resorts (Arapahoe, Breckenridge, Copper, Ski Cooper, Keystone, Loveland) just off of highway 70 about 110 miles from the Denver International Airport. Copper Mountain is accessible by shuttle bus or by rental car.
Copper Mountain (mountain base):
One must first get to Denver Colorado which is easily accessed by air.
Note that some mapping systems and GPS's will route you off of I70 and onto highway 6 and back onto highway I70. That is a ridiculous route, just stay on I70 until you get to the Copper Mountain exit.
Copper Mountain provides limited and expensive (on high traffic days) parking at the center and East village of the mountain. There are multiple shuttle served, large secondary lots. Note that GPS directions to Copper Mountain will direct you to the "Center Village" where your parking option is limited and expensive. Find the "Alpine" lot and take the shuttle as this is your best option.
Alpine Lot: free parking and shuttle bus service to each of the base villages
Alpine Lot Map: enter from Hwy 91. Avoid taking Copper Road into the village as parking there is limited and expensive