Its open until you cant ride anymore. We were there last year May 9th in 2 ft of pow and this year will be later im sure. understand that you can still stage from parking lot but that might change with the May temps very soon
then you just drive up to the first gate
Rode it on Saturday with the family, trail is still in pretty good shape and a fair bit of un-touched past the cabin.
We rode Gorman on friday and despite the trail going in it was a epic day.
Rode quartz yesderday, still parked in lot, a couple 100 yards of gravel to the snow on the trail, trail was way better than i expected for this time of year, snow up top was decent, we had a blast well worth the 10 hour drive for us:d will post pics later today, gotta go do more riding