CCC Road

Ride up the Mt. Si Road until it turns to dirt and heads uphill. (Ignore signs saying "No recreational access"; they're probably meant to discourage people from parking up there.)

Continue up this road and eventually come to a 4 way intersection (the tough climbing is now over) about 2 miles from the end of the pavement. Staying right onto a lesser traveled rd, you'll soon get to the blue DNR gate(100yards from the 4 way).

Keep going straight on this gravel road as it wraps around into the Middle Fork of the Snoqualmie drainage. There are two side roads where it may not be obvious which way to go; one goes downhill to the right (stay left-downhill goes to a mining claim) the next goes left and slightly uphill (stay straight/right - BIG water bar here that marks the beginning of the "no cars" trail). Starting here there will be lots of water bars, newly dug drainage ditches, and lots of creek crossings to aid in keeping the main trail dry.

There are at least 5 main creek crossings(easy to stay dry if it isn't high water season) and lots of little ones. After the last crossing you will come to a graveled logging road about 6 or 7 miles into the ride. This is the Bessemer Road. Going right on this road drops down to the Middle Fork Road. Go straight(left) .3 miles and look for the trail to branch off the road on the right (this is easy to miss - if you start doing a low gear grind up the road - you have gone too far!). This is the start of the "trail" portion. Follow this about 3 miles to the Middle Fork Road about 9.5 miles from the start.

Some people turn around here. Some people turn right and go down the Middle Fork Road for 2-2.5 miles and turn right on that graveled logging road(parking and a gate) mentioned above and after a steep climb (about 1.5 miles) will reach the CCC road at that last creek crossing.

But what you COULD do after emptying out onto the MF Road is take the "newer" CCC extension trail. Turn left on the Middle Fork Road for about 150 yards and look for the trail on the left. The start of this trail can be hard to find. Look for the ascending trail 50 feet past the little parking area). It is about 3.5 miles long and ends at the Middle Fork Campground. WARNING: There are lots of footbridges on this trail - treat all of them as if they were covered in ice. They stay slick all year.

Alternate:  Drive the Middle Fork Road and park at the Bessemer Road Trailhead(also called Blowout Creek Trialhead by WTA) - Going up this road(1.2 miles) eliminates the first 6 miles of road/trail. Since the MF area is relatively low elevation, this can be a good winter ride.  Or even drive the MF road to the main parking area and just do the extension trail.   Lots of choices. Lots of mileage options.