Starting at the Lucia Falls trailhead inside the Moulton Falls Park, the trail climbs immediately upward from 450' to 1600 in 1.5 miles. Don't despair, the view at the top is worth the effort. The climb is, however, brutal. It's mostly rideable for stronger riders, with a few hike-a-bike sections for the rest of us. Once you cap out at the top, there are a few lovely spots to take a few photos and give your legs a break. Then enjoy some flowy downhill for the next 1.5 miles.
Enjoy the next few miles of a mostly relaxed and easy-to-ride singletrack, with only a few a few short climbs.
At mile 4.1 you'll enter a clear cut area. Stay on the trail until you hit a logging road then hang a left and climb up and around a small hairpin corner. At mile 4.5 (ish) you'll see the trail on the left hand side of the road. Drop off the road onto more singletrack goodness. Continue on until you hit the campground. Take a break before reversing and heading back to Moulton.
For the rider looking for more adventure, head out of the campground and hang a right down L-1000 to Larch Mt. Or pick your way over to the Cold Creek campground and Tarbell (L-1000 to Dole Valley and a left down to the campground)