Trail Regulations

For Your Safety and the Protection of the Environment...

Visitors are responsible for knowing and obeying District Ordinances: Land Use Regulations.

Below is a list of some basic regulations that will help to ensure a safe, enjoyable visit.


Hours: Preserves are open a half hour before sunrise until a half hour after sunset.

Closed Areas: Certain trails or areas within the District are closed either as regular seasonal/interim closures or as Sensitive/Hazardous Closures. Closures are made under the authority of Section 805.2 of the Regulation for Use of Midpeninsula Regional Open Space District Lands, also known as District Ordinances

Please note that entering a closed area is punishable as an infraction or a misdemeanor, depending on the classification of the closure. Your cooperation in using other trails and respecting closures is appreciated.

Be sure to also check Permit requirements and the latest Trail Conditions prior to your outing.

Dogs: Dogs are allowed only in designated preserves or areas as posted and must be controlled on a maximum 6-foot leash at all times. You can contact the District for guidelines on retractable leashes. Please see Ideas for Dog Owners and Dog Access Guidelines for more information.

Bicyclists: Helmets are required at all times. Please observe the 15-mph trail speed limit (5-mph when passing or approaching blind turns). Ride on designated trails only (indicated on preserve signs and maps). Please see Ideas for Mountain Bikers and Bicycle Access Guidelines for more information.

Equestrians: Helmets are recommended for all equestrians. Riders under 18 years of age are required to wear a helmet on all District land. Ride on designated trails only (indicated on preserve signs and maps). Please see Ideas for Equestrians and Equestrian Access Guidelines for more information.

Groups: For safety reasons, permits are required for all groups of 20 or more people. See the Permit Information page for details.

Fires: Fires are prohibited on preserves.

Smoking: Smoking is prohibited on preserves.

Weapons: Weapons of any kind are prohibited on preserves.

Plants and Animals: Please leaves plants and animals undisturbed. This not only preserves the natural environment, but is also a safety precaution.

Some activities on District open space preserves require a use permit.

All wildlife is protected-- please do not disturb any animals you may see. If you are fortunate enough to encounter wildlife during your visit, do not approach, startle, or feed it. Although wild animals are generally fearful of humans and will run away, some wildlife can be dangerous. Please see Wildlife Safety for more information.

You can obtain a complete list of all District Regulations and Ordinances by calling the District’s Office at (650) 691-1200.

  Additional Information

District Ordinances: Land Use Regulations

Trail Safety and Etiquette

Trail Conditions

Seasonal Trail Closures

Wildlife Safety

Permit Information

Bicycle Access Guidelines

Dog Access Guidelines

Equestrian Access Guidelines

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