Thanks Hillbasher,
I rode it today and there a was car over the side in broad daylight, so I guess time of day doesn't really matter.
I am old (60) and kind of slow (lots of riders passed me) but 2:05 from Boulder Springs to the Lodge, then another 1:03 to the Ski Lifts.
Lots of riders on GMR/GRR and quite a few on the Ski Lifts section too.
Rick / OCRR