Climbed glacier peak via the standard Disappointment Cleaver route this past Thursday-Sunday (summited on Saturday) with a group of 5 others. 

Day 1 - trailhead to Mackinaw shelter on Thursday evening 
Day 2 - Mackinaw shelter to just below glacier gap 
Day 3 - camp to summit then on to White Pass for our final night 
Day 4 - White Pass to trailhead

Some notes: 
-Bugs were bad at the trailhead and hike in to Mackinaw shelter, but did not bother us too much at camp. 
-Saw more marmots than I have ever seen before on the approach. 
-Foam creek trail is easy to follow. 
-Lake basins below White Chuck Glacier are melting out fast and snow is thin in places. Use caution not to posthole through snow and twist an ankle (or worse fall into flowing water underneath). Route is easy to follow though. 
-Plenty of water wherever you camp 
-Crevasses are beginning to appear on the Gerdine Glacier below Disappointment Peak - consider roping up before passing through here. 
-Glacier peak has real glacier travel and crevasse rescue gear should be considered mandatory for a summer climb (use your own judgement earlier in the season). When we were descending the mountain, we were the last group coming down and therefor would have needed to perform a crevasse rescue independently if someone were to take a fall (i.e. don’t rely on other groups). 
-We had 2 rope teams each on a 30 m rope, 2 pickets/rope team, everyone carried biners/prusiks/slings/pulley. The gear we brought felt appropriate given the route.
-Bugs were terrible on night 3 at White Pass 

Detailed trip report and pictures at link below.

July 30 - North Sauk TH to Mackinaw Shelter

We began our route around 6 p.m. and reach the campsite after sundown. There were numerous campsites available and the water source was easily accessible. Mice immediately greeted us, so be sure to keep food out of their reach.

Up to this point, there were no obstacles on the trail. There were no downed trees to cross, however we did pass numerous stinging nettles that could be irritating.

July 31 - Mackinaw Shelter to White Chuck Glacier Camp at 6700'

We left camp in the morning and made the long trek through the switchbacks up to White Pass. There, we took a nap before filtering water and using the toilets in the camping area below.

The bugs from Mackinaw shelter to White Pass were horrible. There were millions of black flies and mosquitoes, and they are very bloodthirsty. In contrast, we did see quite a display of wildflowers on our way up. I saw Tiger Lily, Lupin, Paintbrush, Yellow Aster, and Anemone to name a few.

After napping at White Pass, we took the Foam Creek Trail across the traverse and up to the col. From here, the 400ft drop and then climb up to the next view of Glacier Peak was miserable in the evening heat.

After crossing a few short snowfields, as well as some boulder fields, we finally found a campsite in the dark. As you Traverse this area and head up to any higher campsites, beware of postholing near boulders. I did this numerous times both heading up and coming down.

August 1 - Camp at 6700' to Higher Camp at 7200'

Day three was a short trek to reach a higher campsite at 7200 ft. Once there, we were able to find a water source near the campsites and enjoyed the views and endless sunshine. A little wind would have been welcome in the intense heat.

We slept during the day and went to sleep early that evening in order to get up at about 11:30 p.m. for the summit attempt.

August 2 - Summit Day and Return to TH

My dreams of reaching the summit were ruined due to blisters from wearing mountaineering boots for the entire trek, as well as due to my slow pace. Despite that, the other two people in my group left for the summit at midnight.

While they summited, I woke up around sunrise and scrambled up a peak to the east of the campsite. The wildfire smoke had reached us and had blocked out most of our views, but made the sun a brilliant red when it came up. My two group members took 7 hours to reach the summit and 3 hours to return to camp.

After my companions returned, we packed up and began the long trip out. This was made more difficult when our only water filter malfunctioned. Combined with the intense heat, the long day, and exhaustion from the entire trek, we took a very slow and long route off the mountain.

We finally reached the car at midnight, with barely any food left over and hardly any energy left to our names. All told, it was an interesting adventure that taught me a lot about future trips like this one.

Lessons learned:

Always pack a comfortable pair of hiking boots in addition to a pair of mountaineering boots. I have more blisters than toes...

Always pack one extra day's worth of food. We ended up using our extra food. I'm really glad we were able to finish the hike out in one day.

Keep your pack as light as possible. Two of our party had packs that nearly weighed 50 pounds. We had a lot of gear that we did not use, including all of our rain gear and an extra gadget charger.

Lastly, bring a bugnet to hide under! I wore my headnet during most of the trip, even though it was a lot warmer.

Arrived at the trailhead at 9am and were greeted by about 50 cars. Luckily the trail wasn't congested but beautiful and in excellent condition. This path travels among the big trees and forest most of the way until you arrive at the bridge crossing Red Creek. Continuing on through more forest and a couple of avalanche chutes, we arrived at the the Mackinaw Shelter, which has a definite lean, and found a good spot on the river for lunch and a view of what I believe is Sloan Peak? All in all, a wonderful hike in the magical North Cascades.

Stopped at the North Fork Falls on the way back to the highway and they were in thunder mode. If you haven't stopped here before, it is well worth the 1/4 mile trek down to the viewing area.

When was the last time you did an overnight backpack and saw just one other hiker the entire trip? We're not sure why this trail was so unpopulated because it had some gorgeous views, but we were happy to be by ourselves.

Started out by dropping our bags off at the trailhead for Bald Eagle (no. 650) and driving back 3 miles to the North Fork Sauk River trailhead, where we would end. Lots of mosquitos, and we stupidly had left the Deet in our bags, so we got a little nibbled on on our way to the trailhead. C was nervous about the trail conditions, since we hadn't been able to find any trip reports and it seemed an unpopular hike, but although it was a little brushy, the trail was clear through Curry Gap. Couldn't see a trail for Quartz Creek even with signage--I think that's overgrown quite a lot. Onwards up Bald Eagle Mountain. Not a lot of views to the south due to cloud cover, but some glimpses here and there of ranges beyond. We camped at Long John Camp, 8 miles from the trailhead (11 miles total from our car). There was water, and a really nice campsite, but lots of bugs.

The next day, we passed through Spring Camp (9 miles from trailhead), but couldn't really see any water source (we didn't look too hard, though). Passed June Mountain and the junction for Dishpan Gap, then down to Blue Lakes. Some snow fields, but nothing treacherous. We camped at Upper Blue Lake, which was half frozen, but beautiful. Lots of bugs, again. We met the only other hiker we saw the entire time at the junction to Upper Blue--he had forgotten Deet and he was COVERED in bites. I've never seen so many bites on a single person before. A little scary.

It was a relatively quick hike to Upper Blue--we got there in about 4.5 hours, so after a rest, we decided to get up to Johnson Mountain to see if we could get a glimpse of Glacier Peak. This was a toughy--about 4 miles round trip and 1200ft gain/loss, but oh my god. The views! We got an amazing 360 degree view on all sides with Rainier in the distance, Glacier Peak in stunning detail, Sloan Peak and the ranges nearby, etc. Just gorgeous. Totally worth it.

The next day, we again ascended up Pilot Ridge and waved goodbye to Johnson as we passed. (You could do the offshoot up Johnson here, instead of doing a day hike from Upper Blue, but we were glad we did it the other way, as the hike out was brutal). Our book says the trailhead is 11.5 miles from Upper Blue, and that it's some of the "finest ridge-walking in the North Cascades". We decided that it had some moments, but mostly it was a slog up and down through trees, with some ridiculously toe-jamming steepness, at one point descending 3,000 ft in about 2 miles. Also a lot of fallen trees/logs on the trail. Including breaks, it took us 7 hours to get down.

Crossing Sloan Creek was a little sketchy--we decided to cross on the logs instead of fording it. (Just don't look down...) Pretty flat from there to the trailhead, but our feet were crying at the end. 35 miles in 3 days is no easy feat! But if you want to find near solitude, see some marmots, picas, deer, and pheasants (maybe?), then go for it!

Another note--there were so many blueberry/huckleberry bushes on this hike. In another month, it will be trail candy all the way!

My son and I got a late start on the trail on Friday evening, and camped at Red Creek, the trail was clear to this point.  

On Saturday we hiked to White Pass. The trail from Red Creek camp to Mackinaw shelter was a little brushy in spots but overall it was O.K.

From Mackinaw Shelter to White Pass, there were 3-4 snow crossings.  After setting up camp on the ridge at White Pass we hiked to the end of the Foam Creek Trail and back. There were several snow crossing.   

All in all, we had a great time and I wish we had more time to explore the area.