I climbed Glacier last weekend, and I can honestly say that it was one of the most grueling climbs I've done.
The 10 mile hike in was absolutely brilliant; with sunshine and pristine wilderness, I felt hopeful about our climb. However as soon as we made high camp at boulder basin, clouds showed up and before long it was pouring rain. We went to bed hoping that the storm would blow over, but it didn't.... I woke up at 2:15am to the rain dumping on our crappy REI tent, and nudged my companions awake. Knowing we were about to embark on a soggy dangerous adventure, we almost decided not to go; but after remembering that we worked our asses off just getting to camp, and that the summit would only be a five or six hour climb away, we headed out into the damp cold darkness.
After about two thousand feet up, the rain turned to ice pellets, and before long, a full out snow storm. It was a miserable slog to the top, and we didn't see crap, but I have to admit that I had fun. The last pitch to the top was the most interesting part; we had to do some front-pointing on the steep ice, and the glacial terrain was fabulous (even in a white-out).
After returning to camp and throwing down some instant oatmeal, we began our long death march back to the car five thousand feet below. The hike out was absolutely brutal... one of our members twisted his ankle on the way down to the climbers camp, and I took most of the gear (rope, tent, climbing gear, food, etc...). I would guess my pack was at least 60 pounds, and by the time we got back to the car, I could barely walk at all.
In retrospect, Glacier Peak more than earned its place as one of my classic Cascade Volcanoe suck-walks. I would love to go back up there sometime in good weather, and actually SEE the mountain; and I would also take three days instead of two to make it slightly more enjoyable. The end.