Driving Directions from Denver:
Keystone is located 90 miles west from Denver International Airport (DEN).
Travel West on Interstate 70 Exit at the Silverthorne/Dillon exit #205
At the end of the exit ramp turn left (East) at the stop light onto Highway 6
Travel 6.2 miles into Keystone Resort
FYI - There are several places to stop along the Interstate 70 corridor for food and gas

There is plenty of free parking in Keystone and you can even walk to the lifts from Montezuma Lot. 

For the rest of the season, park slope side for just $10/day Monday - Friday.  (Not valid at Hunki Dori Lot).