Their parking fills up FAST after 9am. The earlier you get there, the better. Parking starts to become available after 3pm as people slowly leave the mountain.
There was plenty of parking before 9a on a beautiful Saturday but I think it gets used as Steven's Pass overflow so it was packed when I got back to the lot around 2p. Awesome place to XC Ski though.
Thanks! Your answer is awaiting moderation.