Mammoth Bar Motocross Track Schedule Changes
Effective June 17, 2023 the motocross track ride days will be limited to Friday and Saturday.   This change has become necessary due to the nature of the soil and personnel/equipment commitment required for dust mitigation and grooming.  As conditions, personnel and equipment change, this modification to track ride days will be reevaluated.  The trails, 90cc track and trials area will remain open to OHV use on Tuesday, Wednesday, Friday and Saturday.

Mammoth Bar's Wet Weather Guidelines
Wet weather closure guidelines are in place for the entire OHV area.  These guidelines require the closure of Mammoth Bar after ½ inch of rain in a 4 hour period, 1 inch of rain in a 24 hour period or continuous precipitation below these levels that causes soil saturation.  After a wet weather event, the area will remain closed for a minimum 24 hour dry out period.  Information on wet weather closures can be obtained daily by calling (530) 885-4527. 


California State Parks encourages safe and responsible off-highway vehicle recreation. Help us protect the environment and keep our recreation areas safe by implementing the following:

• Obey park rules, such as parking in designated areas and not entering closed areas.
• Know the laws for off-highway vehicle recreation.
• Stay on designated trails.
• Use proper equipment such as protective clothing, goggles, a proper helmet and gloves.
• Ride within your limits.
• Approach curves and hills with caution.
• Stop only in clear areas as fuel can spark fires in grassy areas.
• Travel with a friend.
• View wildlife from a distance. Never feed or touch wildlife.

Rider Image

Mammoth Bar OHV Area is part of the Auburn State Recreation Area. It is located in the Sierra Nevada foothills about thirty miles northeast of Sacramento. This motorcycle/ATV riding area has been used by off road enthusiasts for nearly 25-years and offers a wide range of trails and conditions in a beautiful setting next to the Middle Fork of the American River. The area is under the jurisdiction of the Bureau of Reclamation and is operated by California State Parks. Some OHV motorcycle/ATV trails are open for two-way traffic and others are one way only. OHV's are restricted to designated signed trails, to the MX tracks and the PIT (Pacific International Trials) areas.

Mammoth Bar is open 7 days a week, weather permitting. 

OHV use is permitted only on Ride Days which are:
Motocross Track: Friday and Saturday
Trails, 90cc Track, and Trials Area: Tuesday, Wednesday, Friday and Saturday. 


The entrance to Mammoth Bar is located on Old Foresthill Road.  The easiest access is off of Interstate 80 north of Auburn. Take the Foresthill exit off I-80 and go east about 2.5 miles to the Old Foresthill Road.  Turn right on Old Foresthill and the entrance is about 1.5 miles on the left.

All OHV use is regulated by both Federal and State laws. OHV's must have a visible ("Green Sticker" OHV registration) Red stickers are allowed all year round.

All OHV's must have a US Forest Service approved spark arrester in working condition and meet Federal and State noise standards (96 decibels maximum).

It is the rider's responsibility to know and comply with all applicable rules and regulations.

Facilities include picnic tables, Chemical toilets. No drinking water.