Between the three mountains at Keystone there are a variety of runs to suit everybody from the greenest beginner to the most advanced. Dercum has most of the green and blue runs for the beginners, while North Peak and The Outback have blues, blacks and moguls for those who enjoy the extra challenge. For park-lovers, A51 Terrain Park has enough pipes and rails to keep them happy. And come 5pm, when most other ski resorts shut their mountains and head to the bars, Keystone keeps Dercum and A51 open until 9pm, offering the largest area for night skiing in the whole of Colorado.