Our group believes the Sedro Wooley exit off I-5 north of Burlington is the better/faster one to take; Cook Rd connects to St Rte 20 a few miles further east. The drive along Baker Lake Rd is pleasant, paralleling river.
Look for the big wood sign "Mt Baker-Snoqualmie Natl Forest" and immediately after turn left onto gravel road. If you reach the T-intersection of Baker Lake Rd then you've gone too far. We followed the signs to "Blue Lake" on this steep, narrow gravel road. Some published directions refer to this road as FR#12 and then it becomes FR#1230. We did not see any such named road signs. At the first fork stay left; do not go to Schrieber Meadow. Eventually there is another fork and also stay left. After a ~3-4 miles the road terminates at the parking area with privy and kiosk at trailhead. Shortly up the trail you'll find a box to sign in at.
We started at 10:30am, had a 30min lunch, rested/took in the views a few times here and there along the way, and returned to car at 3:00pm. We walked to the top of Dock Butte and then over to Blue Lake (see low sign along trail). Someone said the trail section to Blue Lake was 0.5 mi one way. I estimate our total hiking distance was 5.5 miles.,
Bugs?--I saw one fly. Dogs?--I saw three on top of Dock plus three more flew by. People?--I counted nine hikers plus one guy with a rifle who said he was hunting grouse. We did not hear any gunfire though there were a pile of feathers and a bird carcass in the parking lot.
The trail was easy enough: some steep areas, some rutty areas, some rocky areas, some muddy areas. Everywhere it was beautiful--alot of heather, gorgeous conifers, fabulous views, a few reflection pools, pretty meadows, and gigantic mushrooms.
Near the top of the Butte there are a couple short 7-10ft rock climbing sections which might be difficult for little kids. Attach your poles to your backpack and use your hands.
From the top I saw a Northern Harrier, Circus cyaneus, soaring below and to the North. Fall foliage?--only a tinge of color in the ground cover in a few places. No plants in bloom.
Some of the exposed rock on top of the butte was orange. At first I thought it was painted on, especially where someone etched in words, but another rock looked more naturally orange. Does anyone know whether this color is a mineral or paint?--see photo.