Quick trip up on the Hayden Glacier proved to be worth it. A few runnels and very few of the dreaded sun cups equaled 2000' of some great sole turns.
A 7 a.m. start returned me to the car at 2 p.m. The route is free of snow up to 6500' and easy to follow except for the turn off the green lakes trail on to the Middle Sister climbers trail at about 4 miles or around 1.5 hours from TH. Worth it for sure. If anyone wants a gpx file let me know.