John Muir Trail

The John Muir trail follows the spine of California’s Sierra Nevada, after the first climb, much of the route stays high, often above 2 400 m (8 000 ft) for roughly 340 km (211 mi). It begins in Yosemite Valley and finishes at Mount Whitney, the highest peak in the contiguous United States. Along the way, the route crosses broad granite passes, skirts high alpine lakes and moves through open meadows scattered with lodgepole pines. Days are long, often involving 8 to 12 hours of walking with a full pack. The scale of the landscape feels vast and remote, with long distances between resupply points that demand careful planning and strict use of bear-proof food storage. Access is regulated through a limited permit system and securing permits can be challenging.

• Mount Whitney summit at 4 421 m (14 505 ft), optional side trip
• Multiple passes above 3 350 m (11 000 ft) including Forester Pass at 4 009 m (13 153 ft)
• Evolution Basin and Evolution Valley with high alpine lakes
• Thousand Island Lake beneath Banner Peak
• Remote wilderness – days between any road access
• Granite domes, talus fields and scattered tarns
• Permit system keeps trail less crowded than approaches

The John Muir Trail delivers sustained wilderness immersion without ever leaving the route. Each pass opens into a new drainage and a fresh arrangement of granite peaks, while the elevation keeps the trek largely within alpine and subalpine zones for weeks at a time. Resupply logistics are a real part of the experience, often involving food drops at remote ranches or hitchhiking into small mountain towns. The trail demands solid physical conditioning and genuine comfort with remoteness.

Because permits are difficult to obtain, most hikers who make it onto the trail are well prepared and committed. Weather can require adjustments to daily plans, but with enough time flexibility it rarely brings the journey to a complete stop.

Start: Happy Isles trailhead in Yosemite Valley, California. Yosemite Village accessible by car or YARTS bus from Merced (Amtrak connection).
Finish: Mount Whitney summit (4 421 m / 14 505 ft) or Whitney Portal trailhead at 2 550 m (8 360 ft). Whitney Portal is 21 km west of Lone Pine. Eastern Sierra Transit connects Lone Pine to Reno and Bishop.
Nearest airports: FAT (Fresno) 130 km from Yosemite. RNO (Reno) 270 km. MMH (Mammoth Lakes) small regional airport with limited service.

Most hikers walk the trail southbound from Yosemite to Mount Whitney, finishing with the ascent of Whitney’s summit. A northbound direction is also possible, but it begins immediately at high altitude and requires strong acclimatization.

The trail is well maintained but consistently rocky, alternating between granite slabs, talus slopes and sandy sections. Passes typically involve 300 – 600 m (1 000 – 2 000 ft) of climbing on long switchbacks, followed by steep descents where loose rock requires attention. Snowfields can linger on north-facing slopes through July, and in heavy snow years sometimes into August.

Creek crossings are usually straightforward on rocks or logs, though early-season snowmelt can create fast, deep water. Afternoon thunderstorms are common, and granite surfaces become slick when wet. Long sections of the route stay above treeline, leaving hikers exposed to intense sun at altitude.

Water is generally abundant from streams and lakes along the route, but all sources should be filtered or treated, as giardia is present. Carry 2 – 3 litres between water points; some high passes have dry approaches, especially late in the season.

Resupply requires planning, with several established options along the trail:

• Tuolumne Meadows: Small store with limited selection and a post office.
• Reds Meadow / Mammoth Lakes: Full resupply via a 1,6 km (1 mi) trail junction; Mammoth Lakes, about 14 km (8,7 mi) away, offers supermarkets and outdoor shops.
• Vermilion Valley Resort: Basic supplies at higher prices; access requires a ferry crossing of the lake.
• Muir Trail Ranch: Bucket drop only, with no purchases on site; arrangements must be made and paid for in advance.
• Independence via Kearsarge Pass: Take the side trail over Kearsarge Pass to Onion Valley; from there, hitchhike or arrange a shuttle to Independence for a full resupply.

Most hikers plan 4 – 5 resupply stops and carry 5 – 7 days of food between points. Approved bear canisters are mandatory, which limits food capacity to roughly seven days for most hikers. Mail drops require precise timing to avoid missed deliveries.

Wilderness camping is allowed throughout the route. Established campsites exist near popular lakes and major junctions, but their use is not required. Camp on durable surfaces such as rock, sand or existing sites and stay at least 30 m (100 ft) from water sources and trails. Facilities are minimal, with pit toilets available only at a few junctions. Some areas have specific camping restrictions, so current regulations should always be checked in advance, particularly for zones near Rae Lakes, Guitar Lake and the Mount Whitney summit approach.

Wood fires are permitted in some areas with the appropriate permit, but dead wood is scarce at higher elevations and restrictions change seasonally, making stoves the more practical option. Cold nights are common, with temperatures often dropping near freezing even in summer above 3 000 m (10 000 ft), so a warm sleep system is essential.

The trail ranges roughly between 1 200 and 4 421 m (4 000 – 14 505 ft), with several passes exceeding 3 400 m (11 000 ft). Total cumulative elevation gain across the route exceeds 14 000 m (47 000 ft). Starting in Yosemite Valley at 1 200 m (4 000 ft) and climbing rapidly to around 2 700 m (9 000 ft) on the first day is physically demanding, which is why many hikers spend one to two days in Yosemite beforehand to begin adjusting to altitude.

Altitude-related symptoms are common and can include headaches, nausea and fatigue. Medications such as Diamox help some hikers but are not necessary for everyone. Acclimatization typically improves after three to four days spent at elevation. Staying well hydrated and pacing conservatively are key – descending is the correct response if symptoms worsen. The Mount Whitney summit is the highest point of the trail and the trail end at the same time.

A wilderness permit is required for both directions.

• Southbound (Yosemite → Whitney): Permits are issued through Yosemite National Park lottery via recreation.gov. Competition is extreme – success rates drop below 20% for popular summer dates. Permits are released on a rolling basis (typically about 24 weeks in advance) via recreation.gov, and popular summer start dates often book out quickly
• Northbound (Whitney → Yosemite): Permits come through Inyo National Forest for the Mount Whitney zone. This uses a different reservation system and separate quota, but competition remains high. The route starts at 3 800 m (12 500 ft), making the opening days physically demanding before acclimatization.
• Alternative strategies: Some hikers secure through-hiker permits from Happy Isles, or obtain permits from alternate trailheads like Cottonwood Pass or Piute Pass that join the JMT later. Walk-up permits exist but are rare and unpredictable.

Approved bear-resistant food canisters are mandatory for the entire trail, and rangers regularly check for compliant models such as the BearVault BV500. Campfires are heavily restricted and often prohibited at higher elevations and in many backcountry zones along the JMT – check current fire rules for each management area and plan to cook with a stove.

All waste must be packed out. Wag bags are required for human waste in the Mount Whitney Zone and may be required in other specific high-use areas – check current local regulations. Dogs are not allowed on trail sections that pass through national parks, which covers most of the John Muir Trail. A valid California fishing license is required if you plan to fish, and group size limits vary by management area, typically allowing a maximum of 8–15 people.

The best season for the trek runs from mid-July to late September. Early July can be possible in low-snow years, but lingering snowfields on high passes may require an ice axe and microspikes. Mid-July through early August typically brings the most complete snowmelt and the longest days, but also peak mosquito activity at lower elevations. From late August into September, bugs diminish, weather often stabilizes and early autumn colors begin to appear, although days grow shorter and nights become noticeably colder.

Early October is sometimes possible but carries significant risk, as storms can deliver substantial snowfall and water sources may begin to freeze. Snow conditions vary widely from year to year, so current reports should always be checked before committing to early-season dates. Most hikers allow 18 – 21 days to complete the route, while strong and experienced hikers may finish in 14 – 16 days under favorable conditions.

An approved bear-resistant canister is mandatory, such as the BearVault BV500 or similar models, which limits food capacity to roughly seven days. A lightweight shelter, either a tent or tarp, is essential due to frequent afternoon thunderstorms. A sleeping bag rated to at least –5 °C (20 °F) is recommended, along with warm layers including an insulated jacket, as mornings are cold and high passes can be windy. Rain jacket and pants are necessary, sun protection is critical at altitude – hat, sunglasses, sunscreen and lip balm all matter because UV exposure increases with elevation.

A water filter or purification system is required, trekking poles are useful on steep descents and stream crossings. Lightweight boots or trail runners both work well, depending on preference, with many hikers favoring shoes that dry quickly. Early in the season, microspikes and possibly an ice axe may be needed. Carry a small first-aid kit with blister treatment and altitude medication if you are prone to AMS. Navigation relies on GPS apps or maps, as phone coverage is sparse and a power bank is important to keep electronics running.

A lightweight stove and fuel are essential, with fuel needs calculated carefully due to limited resupply options. A basic repair kit helps manage gear failures in remote sections.

Physical preparation matters: training with a weighted pack on steep terrain is strongly advised. Elevation gain on the JMT is relentless and many hikers arriving from sea level struggle during the first week despite good overall fitness.

The difficulty is rated 4/5, reflecting the combined impact of high altitude, long days, heavy packs and overall remoteness. Hikers who are comfortable with 10 – 12 hour days while carrying a base weight of 11 – 14 kg (25 – 30 lb) plus food will cope best. Altitude affects everyone differently: some adjust within a few days, while others feel its effects for much of the trail.

Weather can change quickly, especially in the afternoons. Thunderstorms are common and bring a real risk of lightning on exposed passes, making early starts essential and descent from high points by around 2 PM a sensible strategy. Snow and ice can remain on high passes before late July, requiring experience and appropriate equipment. Stream crossings are usually manageable but can become dangerous during peak snowmelt.

Wildlife encounters are part of the landscape. Black bears are common, but proper food storage prevents most issues; grizzlies are not present. Rattlesnakes occur at lower elevations, particularly in warmer sections. Mosquitoes can be intense in mid-summer, sometimes lasting into mid-August depending on snowmelt and weather.

Rescue is possible but can be slow due to the trail’s remoteness. A satellite communicator is strongly recommended. Cell coverage exists near some passes and peaks but is unreliable overall. The nearest hospital is typically several days’ travel from most points on the route. Comprehensive travel or trip insurance is a wise precaution.