Near Downieville, Summit / Bucks Creek is a cool 4 mile singletrack with 300 feet of vertical. To reach the mountain biking trailhead from Oroville, take Oro Dam Blvd and turn right at Olive Hwy (which becomes the Oro-Quincy Road). Continue 35 miles northeast to Bucks Lake Road, trailhead located east of lake or 14 miles west of Quincy off Quincy Bucks Lake Road. Parking at either Bucks Summit parking area or Bucks Creek trailhead. Summit trailhead starts at Bucks Summit and continues 2 miles through meadows and forested area. When the trail reaches the pavement turn right and take the Bucks Creek trail 1.8 miles back to Bucks Lake Road and continue a 1/4 mile to Bucks Summit. This trail goes through the Whitehorse Campground. Points of interest include views of Bucks Lake Wilderness.
Overall, Summit / Bucks Creek Loop Trail is the 70th most popular mountain bike trail of all 132 mountain biking rides in California.