Lot's of Blacks and very challenging Blues
Greens are a very sad excuse - - not worth it
If you are a beginner, I would strongly urge you to ski elsewhere. The greens that they do have are incredibly lacking. First, the majority of the gree terrain has been relegated to trails the width of country rd -- if that wide. You're essentailly snow plowing the entire way down while more seasoned skiers fly by in close proximity - - not a good learning environment. Second, Keystone has mad a horrible mistake by placing the Terrain park at the other end of a green run (probably the only nice run there is), subsequently, 100's of testosterone charged boarders come crashing down the run almost out of control to get to the park. I don't blame them too much becuase much of the run is flat and they need the speed to carry them through.
Then, when you feel you are up to skiing a blue you find hills that could easily be found on black??? What's up with that??? There are soooo many better option for begginer skiiers, so please avoid Keysone until you built up some experience. The staff was very friendly and they took good care of grooming the trails.