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Planning to Thru-Hike the John Muir Trail? Do It Right on This 10-Day, Ultralight Plan

Posted On April 6, 2017 at 3:18 am by / Comments Off on Planning to Thru-Hike the John Muir Trail? Do It Right on This 10-Day, Ultralight Plan

By Michael Lanza

Are you planning to thru-hike the John Muir Trail? “America’s Most Beautiful Trail” should be on every serious backpacker’s tick list. After thru-hiking it in seven days, I became convinced that—while a week was very hard—the traditional itinerary of spreading the roughly 221-mile trip out over three weeks or more has a serious flaw: Because of limited food-resupply options, you’ll carry a monster pack that may not only make you sore and uncomfortable, it could cause injuries or other problems that cut short your trip.

Over the years, I’ve evolved from being one of those traditional, heavy-pack backpackers to traveling as light as absolutely possible, and the John Muir Trail is perfect for an ultralight strategy because of its generally dry, late-summer weather, well-constructed footpath, and moderate grades. Fit hikers who arrive with their legs in trail condition can knock off 20 to 22 miles a day—spending about 10 hours a day on the trail (including breaks) and averaging 2.5 mph, a reasonable pace for someone in good shape who’s walking with a light pack.

I’ve laid out below my strategy for a JMT thru-hike spread out over 10 to 11 days. See more advice about planning a JMT thru-hike in the Make It Happen section of my story about our seven-day thru-hike, which has more photos and a video.


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At Trail Crest on Mount Whitney, on the John Muir Trail.

At Trail Crest on Mount Whitney, on the John Muir Trail.

Season A JMT thru-hike can be done from July through September. But the best time for an ultralight thru-hike is mid-August to mid-September, when—usually—the mosquitoes have abated and rain is rare (allowing you to use a tarp instead of a tent), the high passes are snow-free, and mornings are cool.

The Itinerary Fastpacking the JMT isn’t just for the lunatic fringe—ultralight hiking was born here. Our group found seven days doable but extremely hard. More reasonable is 10 to 11 days, because fit hikers capable of averaging 20 to 22 miles a day can, with early-morning starts, still avoid hiking during the worst afternoon heat—and critically, not carry more than five days of food. Here’s how:

•    Hike north to south—from Yosemite Valley to Whitney Portal—to gradually acclimate to the highest elevations.
•    Start early every day. Hike in the cool morning and evening hours, and rest during the afternoon heat. Knock off most of your day’s mileage by early afternoon. By going ultralight and not cooking, you’ll find that packing up camp takes just minutes. (See more about backpacking only with food that doesn’t require cooking in my article “The Simply Equation of Ultralight Backpacking: Less Weight = More Fun”)
•    Plan fewer miles on days when your pack is heaviest, and more miles when you’re traveling lightest.
•    Hiking southbound, the hardest and hottest climbs are to Mather Pass, Glen Pass, Forester Pass, and Trail Crest/Mt. Whitney. If possible, do these in the morning.


Do it right with my tips for backpacking lighter and the best thru-hiking backpack.


On the John Muir Trail overlooking the Cathedral Range, Yosemite National Park.

On the John Muir Trail overlooking the Cathedral Range, Yosemite National Park.

Minimize daily pack weight with this resupply plan:

•    From Yosemite Valley, carry only light hydration packs for the 22 miles to Tuolumne Meadows. Have your backpacking gear and food waiting there. Eat a big meal in the Tuolumne café.
•    At Red’s Meadow (800-292-7758 or 760-934-2345,, a short hike off the JMT, resupply for the next 50 trail miles either by having someone meet you there, or for a fee, mailing or delivering a package in advance. Eat a big meal at the Mule House Café.
•    Resupply a final time at Muir Trail Ranch (209-966-3195,, about a mile off the JMT near the trail’s midpoint. Ship non-perishable food weeks in advance; a fee is charged.


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Not up for 20-mile days? It’s not for everyone, of course. Many hikers allot three weeks, a pace of about 10 miles a day. Maybe the smartest strategy for you would be something in between—say, 15 days averaging 14.7 miles per day. Experiment with backpacking longer days and traveling light on shorter trips before your JMT thru-hike.

Still, traditional backpackers can draw benefits from adopting strategies employed by fastpackers—including going north to south on the JMT. Besides giving you time to acclimate to the higher elevations of the southern Sierra, it gives you two resupply opportunities (Tuolumne Meadows and Red’s Meadow) to keep your pack lighter while building up your trail legs. And it gives you half the trip—prior to reaching the last resupply opp, Muir Trail Ranch—to gauge your food needs and daily mileage capabilities.


Score a popular permit using my “10 Tips For Getting a Hard-to-Get National Park Backcountry Permit.”


By that time, you may find you’re walking farther every day than you anticipated and eating less than planned—both realizations are common among people doing their first long trail, because backpackers often overestimate food, and the JMT is not, step for step, as difficult as hiking in other parts of the country. Give serious thought to food supply and daily mileage, because leaving Muir Trail Ranch with 10 or 11 days worth of food will add about 20 pounds to your pack as you head for the JMT’s highest passes.

See also these related stories at The Big Outside:

7 Pro Tips For Avoiding Blisters
My Top 10 Favorite Backpacking Trips
Tent Flap With a View: 25 Favorite Backcountry Campsites
5 Tips For Spending Less on Hiking and Backpacking Gear
Training For a Big Hike or Mountain Climb


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