Know the Hike Before You Pack
Mount Whitney is the highest summit in the contiguous United States, at 14,505 feet (4,421 meters). The main trail from Whitney Portal is roughly 22 miles round trip and gains a large amount of elevation, so many people treat it as a very long day hike, while others split it into an overnight trip. The route is non-technical in typical summer conditions, but altitude, weather, and distance make it demanding.
A permit is required for both day hikes and overnight trips. Permit rules, dates, and quotas change, so check the current information from the Inyo National Forest before you plan. The gear below is organized by what is required or strongly recommended, then by category.
Required or Regulated Items
- Permit. Keep it accessible, and confirm the requirements for your date.
- Waste bags (WAG bags). Solid human waste is generally required to be packed out on the Whitney trail, and bags are typically provided at the permit pickup area. Confirm the current process when you collect your permit.
- Bear-resistant food canister for overnight trips. Approved canisters are required in this area to protect food from bears and other wildlife. Check the current list of approved models.
Clothing and Layers
Temperatures at the trailhead and at the summit can differ greatly, and weather can change quickly, including afternoon thunderstorms.
- Moisture-wicking base layer (synthetic or merino)
- Insulating layer: fleece or a light down or synthetic jacket
- Waterproof and windproof shell jacket, and rain pants if the forecast looks unsettled
- Hiking pants or shorts, and perhaps tights for cold starts
- Warm hat, gloves, and a sun hat
- Extra socks
Start layers are often worn in the dark and cold, then removed as the day warms, so keep them accessible.
Footwear
Well-broken-in hiking boots, hiking shoes, or trail runners all work for many hikers. What matters most is that they fit well and have been tested on long days. Bring cushioned socks and a spare pair, plus blister care.
Trekking Poles
Many hikers find poles useful for the steep descent, and for the many switchbacks. They can help reduce strain on knees, but they are optional.
Snow and Ice Gear
Early in the season, snow and ice can remain on the upper trail. Depending on conditions, hikers may need microspikes, crampons, or an ice axe, and the skills to use them. If you are not trained for snow travel, consider waiting for a safer time, or hiking with an experienced partner. Check recent trail reports.
Navigation and Safety
- Offline maps and a paper map, since cell service is limited
- Headlamp with spare batteries, as many day hikers start before dawn and some finish after dark
- Satellite messenger or personal locator beacon, as much of the route is out of cell range
- First-aid kit with blister care and pain relief
- Whistle
- Emergency blanket
- Sun protection: Sunscreen, SPF lip balm, and sunglasses. UV exposure is stronger at altitude.
Water, Food, and Hydration
- Water capacity: Many hikers carry several liters, with the ability to refill along the way. Sources exist along the lower and middle parts of the route, but their availability can vary.
- Water filter or treatment: Required if you plan to refill from streams or lakes.
- Electrolytes to help with replenishing salt on a long, hard day.
- Food: Plenty of snacks, since you may be burning more energy than you expect, and appetite can drop at altitude. Salty snacks and easy-to-eat foods help.
Day Hike Pack Checklist
- Daypack large enough for water, food, and layers
- Permit and ID
- Layers and rain shell
- Water, filter, electrolytes
- Food and snacks
- Headlamp, map, first aid
- Sun protection
- WAG bag and toilet paper
- Trekking poles, if desired
Overnight Additions
- Lightweight tent or shelter and a sleeping bag suitable for cold nights at elevation
- Sleeping pad
- Stove, fuel, and cookware, or no-cook food
- Bear canister
- Larger pack
- Warm clothing for camp
- Extra food
Altitude Considerations
At high altitude, some people experience headaches, nausea, or fatigue. A common approach is to spend time at elevation before the hike, drink enough fluids, eat regularly, and descend if symptoms worsen. If you have health concerns, talk to a doctor before attempting the hike.
Common Questions
Can a beginner climb Mount Whitney?
Some beginners do complete it, but it is a long and strenuous hike at high altitude. Training with long hikes that include elevation gain, and allowing time to acclimate, can improve your chances. If you are new to hiking, consider building up with smaller peaks first (see mountains to climb in California and hiking 10 miles a day).
Do you need bear spray on Mount Whitney?
Bear spray is not usually listed as a standard item for this trail, and rules about it can vary. The main protection against bears is storing food properly, including with an approved canister on overnight trips. Check current Inyo National Forest guidance before bringing it.
What is the hardest part of the hike?
Many hikers report that the combination of length, elevation, and the steep upper switchbacks is the hardest part, and some also find the descent difficult on the knees. Altitude can add to the difficulty.
How many people fail to summit?
Exact numbers vary by source and year, and I am not confident enough in any single statistic to quote one. Many people turn back because of fatigue, altitude symptoms, or weather. Starting early and watching the weather can help you decide safely.
Related Reading
If you are planning a Sierra road trip, the Yosemite packing list covers another popular California destination. For a longer trek with high altitude, see the Kilimanjaro gear list.