Muddy, but I didn't go far.  Not long at all today. 

Started with the Middle Fork Trail out to the Dutch Miller Gap Trailhead, then back to the Middle Fork and up Stegosaurus Butte. Still felt good, so took the Connector Trail up and did Garfield Ledges. Middle Fork road and trailhead are in great condition.

TL;DR: Great hikes, Middle Fork is wet, Stegosaurues Butte is steep, Garfield Ledges are nice and wide and even.

Middle Fork: First car in the parking lot at 7:45. Some very nice fog this morning covered the valley, visibility was pretty low. Set out hoping to be able to make it to Dutch Miller Gap TH. Ended up with everything one could want from a forest walk. Rolling trail, sunlight through big trees (picture 2), mossy knolls, waterfalls, stream crossings, campgrounds, you name it! There was one stream crossing at 2.75 miles (picture 3) that was only really doable by going up or downstream and jumping across slippery rocks or logs. Lots of snowmelt right now, so the water levels are high everywhere. Lots of people turned around here, smart decision. I crossed downstream on the way out and upstream on the way back. Besides that stream crossing, there was water on the trail in many places, sometimes up to six inches deep for sections up to 20 feet long. Thanks to conveniently placed rocks and logs, agile feet, waterproof boots, and the added stability of a hiking pole, my feet stayed dry the entire time. There are several logs down across the trail, but all should be pretty easy to step over. Took the river access on the way out and discovered much the same thing. Doable, at least a dozen logs across the trail, and a large swampy section that required some creative pathfinding. Probably stay on the main trail for now if you don't want that much adventuring. Made it to Dutch Miller Gap for a little snack and turned around. Restroom was closed, but two high-clearance cars in the lot suggest that the road is doable. Same story on the way back, skipped the river access as I did not want to navigate the swamp again. No snow at all, saw some bugs but they did not bother me at all. Saw no one else on the way out, and maybe 20 people on the way back. (13 miles, 1800 elevation gain)

Stegosaurus Butte: Turned around the corner on the Pratt Connector and started up the butte trail. After the rolling Middle Fork, the butte is a shock of elevation. Certainly not a highway, a narrow winding trail immediately becomes quite steep, making me thankful for my hiking pole once again. Ate lunch at the top, which was nice and sunny with great views over Rainy Creek, out the Middle Fork Road, and across to Garfield Mountain (picture 4). Down was faster than up, but not by much. Still need to watch for rocks and roots, hiking pole was even more helpful. Snow free, didn't see anyone else while I was up here. (2 miles, 1200 elevation gain)

Garfield Ledges: Walked the Connector Trail over the Garfield Ledges Trailhead. After Stegosaurus Butte, both of these trails felt wide, easy, and relaxing. Saw and heard some chainsaw felling happening over on the CCC Trail just before walking across the car bridge. Pleasantly surprised by the Garfield Ledges Trail, due to had excellent, wide grading and good footing everywhere, pretty much the opposite of the Butte (and stairs!). The view was great (picture 1), especially given the effort required. Could see down the Middle Fork road, out the river, and across to Stegosaurus Butte. Maybe a dozen people or so on the trail, more people coming down than up as it was close to 1:00 by then. No snow or bugs. Walked down and back the same way to the Middle Fork Trailhead, and just barely reached 18 miles of distance. (3 miles, 800 elevation gain)

In total: 18 miles, 6 hours, 3800 elevation gain

TLDR 

Middlefork out to Thunder Creek. Main notes:

1. Very wet, but what do you expect in March!
2. Rock Creek was the only slightly uncomfortable ford, but do-able.  
3. Thunder Creek was not fordable and the log bridge is out. 

Detail

Nice day hike out along the Middle fork - was considering camping in the backcountry campsite, but was so wet that I decided to turn back. The campsite is in pretty good shape though for the interested. 

Did the Rock Creek (~mile 8) ford on the way out with some ease, bushwacked a little downstream to where the creek splits to make for easier crossing. 

Thunder Creek (~mile 10) though was a torrent when I got there and I wasn’t comfortable crossing the little logs over the river. There is an easy access point to Dutch Miller Gap road, which I think I would take next time. 

It's wet and sloppy out there, but you already knew that, right? Beyond the predictable seasonal cautions, the trail is in good shape aside from the side-trail to the river -- that thing is a mess and a half. Lots of deep, standing water; plenty of down trees - it's just not worth it.
Anyhow, started off around 9 in a cold drizzle, but it eventually let up and we started to get a bit of sun around midday. However, the low clouds persisted throughout, only giving way to a few peek-a-boo views of the snow-covered ridges. We went as far as the backcountry camp before stopping for lunch and turning around, a little over 12 miles according to Strava. Not too crowded - mostly trail runners and just a few dayhikers like myself.
I'm marking the "no bugs" checkbox, but I did immediately get bitten on the forehead by a mosquito upon rearrival at the trailhead, so be forewarned! They are coming.

For a last minute, late start on a day with maybe not the best weather forecast - this was still a stellar option. We left Seattle around 10:30am, arriving around 11:30am - tons of parking left (and such a huge lot) - I think this is the benefit of fickle weather during the shoulder season. The trail was in fairly good shape - no snow and the only minor issues were the frequent muddy patches. We only went about 1.5 miles up the trail and back again. There were at least two muddy patches that were clay-based, so a bit more slippery. The only water crossing was super easy to not even get your feet wet. Lots of gorgeous views of snow-covered Mt. Garfield and lots of birdsong/river soundscape along the way. Overall a really nice place to stretch your legs and enjoy a lowland snow-free trail without much elevation gain.