Overview
Eldorado is a true "classic" PNW skiing objective. It's got a little bit of everything that you want in a ski outing from steep boulder approach, knife edge summit ridge and some of the best views in the Northern Cascades. You can even peek into Canada if the border is open. It's doable in a big day, but best enjoyed by granting yourself a night out in the wild and it makes it easier to get good corn as well.
Skier access
Get yourself to the town of Darrington where the road pretty much ends you take a left onto highway 530 which goes north. In about 19 miles the highway ends, take a right onto highway 20 towards Marblemount. In about 7.5 you arrive at the city of Marblemount. After passing the last gas station the highway curves, be sure to go strait which goes onto the Cascade River Road. After crossing the bridge the road takes you all the way to the trailhead of Eldorado which is at Mile Marker 20. Keep in mind that the last 10 miles of road is gravel and washes out almost every year at some point. The trailhead itself is on the right hand side and has a decent parking lot.