Humbug Trail is a very difficult 2.7 mile trail. The trail begins in Malakoff Diggins State Park, generally following Humbug Creek. This trail is step and difficult, and is closed to mountain bikes. It joins the South Yuba trail just west of Humbug Creek, about 10 miles west of Poorman Creek and 4.5 miles east of the South Yuba Campground.
Directions from Washington: Travel north for less than one mile, bear left, continuing on Washington Road. After a short distance, turn left on Relief Hill Road (RD #36.) The pavement end 0.4 miles west. Continue on the gravel road crossing Poorman Creek. The trailhead is 0.1 miles beyond the creek (2 miles west of the South Yuba River bridge.)
Directions from Nevada City: Travel west on Hwy. #49 and turn right onto North Bloomfield Road. Travel north to Edwards Crossing. Drive north on e mile to the South Yuba Campground.