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Safety & Conduct

Call 760.934.0611 for all on-hill emergencies

High Altitude Tips

High Altitude Tips

The center of town is approximately 7,500 feet above sea level, and the elevation at the base of Mammoth Mountain near the Main Lodge is 9,000 feet. Visitors may experience some minor side effects due to Mammoth’s high elevation. 

Altitude Adjustment

When you first arrive, acclimatize yourself for a period of time prior to beginning strenuous activities. At high elevations, the atmosphere is thinner and there is less oxygen and less humidity available to you than at sea level. This can result in a number of symptoms such as muscle fatigue, insomnia, mild headaches or slight shortness of breath.

Avoid sunburn

Our thin atmosphere filters out only a minimum of the sun’s ultraviolet (“UV”) rays and can result in severe sunburn. So be sure to take adequate precautions to protect your eyes and skin. During high-exposure activities such as spring skiing, those with fair skin may experience sunburn after only two hours of sun exposure, even after applying maximum sunscreen protection. Parents should be especially careful with young children, and apply a generous amount of sunscreen prior to any outdoor activities.

Keep warm

At this elevation, the weather can change quickly. Winter or summer prolonged exposure to the elements can cause serious problems. Children are not always aware that they are becoming too cold. Parents should watch for red noses and red ears. If this occurs, bring the child in from the cold, remove wet clothes and warm the child and affected areas immediately. Take frequent breaks from the cold or heat. It is wise to layer your clothes, no matter what the season. A t-shirt, wool sweater, nylon windbreaker with hood and a bottle of water are basics for just about any summer activity. 

Eat Lightly and Drink Plenty of Liquids

You may tend to become dehydrated more quickly at high altitude than at sea level, so drink plenty of water and other fluids (8-10 glasses daily). You should also avoid drinking alcoholic beverages for the first 24 hours of your stay.

Protect Your Eyes from High Altitude Sun and Wind

It is important to use proper UV protection for your eyes. The surface of the dirt or water can act as a reflector of UV rays and can generate a great deal of UV exposure to the eyes. Equip yourself and your children with UV sunglasses or goggles. Failure to wear proper eye protection can result in an actual burn of the eye’s surface– a painful condition requiring medical treatment. Wind and blowing dust can wreak havoc on sensitive eyes so make sure to have protection even when the weather seems calm.

Listen to Your Body

If you experience symptoms such as headache, insomnia and/or fatigue, you may have a mild form of “altitude sickness.” These symptoms are a warning to decrease your activity level. If symptoms persist or begin to worry you, don’t hesitate to come to the Emergency Department or Sierra Park Family Medicine Clinic.
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Lightning and Thunderstorms

Lightning and Thunderstorms

Variable weather conditions exist in the Sierra; thunderstorms, wind events and even snowstorms are common in these mountains. Seek shelter when you see a storm developing. Keep off ridge tops and stay clear of lift houses, lift towers, power lines, open ski runs, the tallest tree in the vicinity, fences and signposts.

Lightning: What You Need to Know
- NO PLACE outside is safe when thunderstorms are in the area.
- If you hear thunder, lightning is close enough to strike you.
-When you hear thunder, immediately move to safe shelter.
- Stay in safe shelter at least 30 minutes after you hear the last sound of thunder.

Last Resort Outdoor Risk Reduction Tips
If you are caught outside with no safe shelter anywhere nearby the following actions may reduce your risk:
- Immediately get off elevated areas such as hills, mountain ridges or peaks
- Never lie flat on the ground
- Never shelter under an isolated tree
- Never use a cliff or rocky overhang for shelter
- Immediately get out and away from ponds, lakes and other bodies of water
- Stay away from objects that conduct electricity (barbed wire fences, power lines, windmills, etc.)

NOAA Lightning Tips
Mountain Bike Safety Checklist

Mountain Bike Safety Checklist

The trails of Mammoth Bike Park are rough and demanding on both the bike and the body. Before riding always inspect your equipment or have it checked by a qualified bike mechanic.


1. Helmets are required for all mountain bike trails. Before heading out make sure yours fits correctly and is not damaged.

2. Assess safety pads for fit and any damage. Make sure you are wearing the appropriate pads for you skill level and that coincide with the difficulty of the trails you're looking to ride. 

3. Inspect bike frame for cracks, damaged or dented areas.

4. Ensure you have sufficient brake pads to stop your bike while descending.

5. Front and rear axles (skewers) should be tight.

6. Headset and stem must be secure with no looseness or play.

7. Check that your tires are in good condition, with no tears or cuts on the rolling surface or sidewall.

8. Handle bar and handle grips must be tight and unable to spin. Seat and seatpost need to be fastened securely.


Bike Park Checklist
Drone Policy

Drone Policy

In the interest of the health, welfare and safety for our guests, employees, and property, Mammoth Mountain strictly prohibits the unauthorized use of drones and all other small unmanned aerial systems (UAS) on its property.  This prohibition includes but is not limited to, aircraft launched off-site that travel anywhere on or above Resort property.


Due to safety and privacy concerns, Mammoth Mountain Ski Area prohibits the operation or use on or above Resort property of unmanned aerial systems, or drones, by the general public—including model aircraft by recreational users and hobbyists—without the prior written authorization from 
Mammoth Mountain Ski Area.  This prohibition includes drones used for filming or videotaping, as well as any drone use by media or journalists operating above or within the area boundaries.  This prohibition extends to any devices launched or operated from Resort property, as well as any  
launched from private property outside of the Resort boundaries.  Please contact Mountain Operations if you have any questions or if you seek prior authorization to operate any such devices. Any authorized operation of drones on or above Resort property will be governed by Federal Aviation Administration (FAA) rules and regulations, local law enforcement, [and / or U.S. Forest Service rules], as well as those policies separately established by this Resort, which may include certification, training, insurance coverage, indemnification requirements, and waivers or releases of liability.  Any violation of this policy may involve suspension of your access privileges to the Resort, or the revocation of your season pass, as well as confiscation of any  prohibited equipment, and may subject violators to any liability for damages, including, but not limited to, damages for trespass, violations of privacy, and physical injuries to persons and/or property, as well as legal fees.

Mountain Use

Mountain Use

Mammoth Mountain has miles of dirt roads that wind their way around the mountain, these are for company vehicles only and are prohibited to biking and hiking. Bikes must stay on marked trails.
Vehicle access to Mammoth Mountain is restricted to company vehicles and those having legitimate business on the mountain only.

To gain access to Mammoth Mountain you must submit a request form to Mountain Operations.


Bike Park Rules

Bike Park Rules

Mammoth works hard to provide the best experience possible. With hazards and natural/man-made obstacles existing on the trails, be cautious and use common sense. Follow these rules and tips to ensure maximum safety and enjoyment on the hill.

1. Safeguard yourself by wearing gloves and protective clothing. Helmets are required at all times. Temperatures can vary radically with altitude change. Use sunscreen - the sun is more intense at high altitudes.

2. Stay in control so you are able to avoid other trail users.

3. Ride trails that suit your ability level.

4. Uphill traffic has the right of way on a two-way trail.

5. On downhill trails, the rider in front has the right of way.

6. Be courteous to other riders and move out of the way when it is safe to do so.

7. On-hill signage exists for your safety. Read and obey all trail signs paying close attention to the trail rating level.

8. Do not stop in the middle of a trail or where you cannot be seen from above.

9. Do not shortcut trails; please tread lightly. Bike park passes will be revoked for riding off-trail.

10. Start out easy. Your body can fatigue more quickly at higher elevations.

11. Staying hydrated is key to your comfort and safety - drink plenty of fluids.

12. Watch out for hikers and motor vehicles.

13. Pets are not allowed on bike trails (leashed pets allowed only on the gondola and hiking rails).

14. Seek shelter during thunderstorms. Stay off ridge tops and away from tall trees, lift towers, powerline poles, signposts and large rock outcroppings.

15. Riding with a partner is strongly encouraged.

Click for Bike Park Rules
Hiker's Responsibility Code

Hiker's Responsibility Code

1. Obey all trail signs and markings and hike only on designated trails.

2. Don't stop where you obstruct a trail or are not visible to others.

3. Dogs must be on a leash and under an owner's control at all times while on Mammoth Mountain's property.

4. Know how to use the lifts properly. When in doubt, ask a lift operator.

5. Respect the environment and wildlife.

6. Access to emergency care available at the Adventure Center, Eleven53 (Summit station), and at mid-station.

7. If you are involved in or witness a collision, you must identify yourself to a Mammoth Mountain Bike Patroller or employee.

8. Be prepared for constantly changing weather conditions.

9.No smoking due to extreme fire danger.

10.Some trails may be closed due to construction. Consult mountain bike staff for information.

11.Please check in at Guest Services prior to accessing the trail system.

12. Please hike on designated hiking trails and roads only.

13. Hiking/outdoor footwear is recommended.