Knoxville Rec. Area     
Bureau of Land Management  (View this site)
Lake County and Napa County, California
Obsticle Course:  
Operating Season:  
All year
"Due to its close proximity to the Sacramento and San Francisco Bay Area regions, and because of it's varied terrain, Knoxville's 17,700 acres attract many off-highway vehicle (OHV) enthusiasts each year. The landscape is characterized by steep and rolling hills with the vegetation varying from scattered hardwoods and grasses to dense chaparral brush. California gray pine and Macnab cypress are also dispersed throughout the area. Of particular note, are unusual plant communities unique to the area's serpentine barrens, which are closed to vehicles to protect the delicate vegetation.

Other popular activities in the area include hunting, mountain bicycling, camping, and nature study. There is one developed campground, and an OHV staging area."

- Bureau of Land Management

Trail Maps      

Knoxville OHVA   (Bureau of Land Management)
Knoxville   (USGS Topo)

Trail Links      

Knoxville Recreation Area  (View this site)


From Highway 29 (Lower Lake - 18 Miles)
- Head East on Morgan Valley Road (14.2 Miles)
- Park entrance at Dunnigan Hill Road is not recommended for two wheel drive vehicles
- Morgan Valley Road becomes Berryessa Knoxville Road (3.9 Miles)
- Turn right onto Knoxville Devilhead Road (Park Entrance)

From Highway 12 (Napa - 55 Miles)
- Head North on Highway 221 toward Lake Berryessa (2.6 Miles)
- Continue straight on Highway 121 (20.3 Miles)
- Turn left onto Highway 128, Capell Road (4.8 Miles)
- Turn right at Berryessa Knoxville Road (32.2 Miles)
- Turn left at the Knoxville Devilhead Road entrance

A bold trail name denotes a link to a trail write up.
  Easy -
   These fun family trails are suited for a stock vehicle and may not always require four wheel drive. In most cases these trails consist of well maintained service roads. Roads are typically wide enough to accommodate passing.

  Moderate -
   While more challenging than the "Easy" rated trails, drivers of all skill levels can enjoy these trails. At this level a stock high clearance four wheel drive vehicle is required. Trails are typically narrow with possible brush that may scratch your vehicle. Passing usually requires backing up.

  Difficult -
   Trails at this rating require a vehicle with increased ground clearance and proper protection. Trails will often require a spotter and should only be attempted by more experienced off road drivers. Most trails at this level require 33" tires and at least one locker is recommended.

  Extreme -
   Trails at this rating require a heavily modified vehicle. At this point you most likely have more dents than lugs on your tires, flops and rollovers are just part of your Sunday drive. Front and rear lockers, at least 35" tires and a winch are highly recommended. "Extreme" rated trails should only be attempted by the most experienced off road drivers.