Mammoth Bar OHV Area

State Parks has filed a Notice of Determination (NOD) with the State Clearinghouse for the Mammoth Bar Motocross Track Relocation Initial Study/Mitigated Negative Declaration (IS/MND). State Parks has also prepared a Decision Memorandum which includes responses to comments received during the 30-day comment period for the IS/MND. The Decision Memorandum also includes an Errata section of minor revisions made to the IS/MND which do not involve any substantive changes to the document. This Decision Memorandum can be found on the link below:

State Parks has released a Notice of Intent to Adopt a Mitigated Negative Declaration for relocation for the Mammoth Bar Motocross Track. The public comment period begins April 27, 2020 and ends June 1, 2020. The entire Initial Study/Mitigated Negative Declaration can be found here

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,  OHV use is permitted only on specific days. OHV Ride Days are as follows;

April 1st-September 30th  Sunday, Monday, and Thursday
October 1st-March 31st Sunday, Monday, Thursday, and Friday


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, BBQ's, Chemical toilets. No drinking water.

Mammoth Bar trail maps are available at the park office and kiosk.