On Friday听at 6 p.m. in Chamonix, France, a gun will signal the start of the 2018 (UTMB), a 100-mile race around the Mont Blanc Massif through Italy, Switzerland, and France. The race is one of the most competitive ultras in the world, as well as one of the most demanding, with more than 32,000 feet of elevation gain, including four passes that top out over 7,800 feet. Last year, runners endured snow, rain, and hail on their run through the high alpine, which is why race directors require every competitor听to carry, among other things, an emergency blanket, a hat, gloves, and a rain shell.听Here鈥檚 the other gear some pros plan to carry during the race.
Tim Tollefson
The UTMB crown has proven elusive for American men, but Mammoth, California鈥揵ased runner Tim Tollefson has gotten close, finishing third two years in a row. He听finished second at the UTMB鈥檚 little brother, the 100K Courmayeur-Champex-Chamonix (CCC), in 2015.

Hoka Evo Mafate听($170)
鈥淭his shoe is an all-around shredder with fantastic cushioning, quick responsiveness, and top-notch durability,鈥 Tollefson says. The five-millimeter Vibram lugs offer just enough traction to excel on singletrack without sacrificing performance on fire roads and pavement, while Kevlar supports in the forefoot provide a secure fit.

Drymax Running Lite-Mesh Socks ($13)
Thanks to venting panels on the top of the foot and under the arch, these socks breathe well, keeping feet comfortable and dry. 鈥淚 have worn them for over 20 hours听without a single blister,鈥 Tollefson says.

Black Diamond Distance Carbon Z Trekking Poles ($170)
Made entirely of carbon, with a quick-deploy system that allows you to unfold and stiffen the pole with one motion, the Distance Carbon Z poles are 鈥渁 must for late-race ascents up nasty cols,鈥 Tollefson says. They are at home in a mountain race, where weight and fast transitions matter.听
Magdalena Boulet
A听road marathoner turned trail runner, Magdalena Boulet competed for the U.S. Olympic team and U.S. Cross-Country team before transitioning to trail ultras in 2013. She has since run her way onto podiums at many competitive U.S. ultras, including the 2015 Western States 100, her debut 100-miler. She finished 19th at the 2017 UTMB.

Hoka Speedgoat 2 ($140)
Designed in collaboration with ultra legend Karl Meltzer, the Speedgoats marry ultra-distance comfort with a responsive midsole. 鈥淭hey are incredibly cushioned while still being lightweight enough to actually race in,鈥 Boulet says. 鈥淭hey also have an aggressive outsole for the technical trails.鈥

Stance Run 360 Uncommon Solid Run Crew Sock ($18)
鈥淚 love the fun designs and comfortable feel, and the slight compression they provide really helps keep the swelling down over 100 miles of running,鈥 Boulet says. She鈥檒l bring several different patterns and make a race-day decision about which pair suits her mood.

Gu Fedora
This tan straw hat has become Boulet鈥檚 signature鈥攕he rarely races without it. 鈥淚t protects my face from the sun, keeps me cool during the heat, and reminds me to have fun during some difficult miles while racing,鈥 she says. UTMB will be no exception.
Ryan Sandes
South African鈥揵orn Ryan听Sandes has notched wins at races from Hong Kong to Australia to the U.S., including the 2011 Leadville 100 and 2017 Western States 100. He finished 21st at the 2017 CCC; this is his first time racing the full UTMB.

S/Lab Ultra ($180)
Salomon designed this shoe for former UTMB champ Francois D鈥橦aene, who wanted kicks听that could handle 100 miles of pounding without packing out. It鈥檚 no surprise they鈥檙e Sandes鈥檚 choice for this year鈥檚 race.听鈥淭he shoe is lightweight but still gives me enough support for a long race and enough flexibility for technical terrain,鈥 he says.

Salomon Bonatti Pro Waterproof Jacket ($200) and Pant ($120)
Each racer is听required to carry a waterproof jacket and pants. Sandes鈥檚 choice: the Bonatti Pro models from Salomon. 鈥淭hey鈥檙e waterproof and really lightweight听but still offer breathability, so that running doesn鈥檛 get super hot,鈥 Sandes says. He鈥檒l also have on hand the S/Lab Light, a lighter, thinner wind layer. 鈥淚t鈥檚 great to take on and off during the race as conditions change,鈥 he says.
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Suunto 9 Watch ($600)
The newest sports watch from Suunto听offers 25 hours of battery life in its least-efficient setting鈥斺渃rucial for an ultra,鈥 Sandes says鈥攁nd up to 120 hours in the most conservative battery-saving听mode.听FusedTrack technology aggregates speed and direction of travel to retain navigational听accuracy, even听in settings that reduce the听frequency of GPS pings to save battery life.
Clare Gallagher
Clare Gallagher has a history of winning races the first time she enters them: in 2016 she won the Leadville 100, her first crack at that distance, and last year she won the 100-kilometer CCC, her first major European trail race.

Honey Stinger Ginsting听Gels ($36 for听24, or $1.50 for one)
These honey-based gels with a ginseng kick will be an essential element of Gallagher鈥檚 fuel menu on race day. 鈥淚 brought 50 of them,鈥 she says. Another nutritional necessity: Coke. Gallagher estimates she鈥檒l consume at least four liters.

Petzl Nao+ Headlamp ($200)
鈥淚 can鈥檛 see shit at night,鈥 Gallagher says. With its 700-lumen bulb, the Nao 鈥渋s clutch鈥 for navigating UTMB鈥檚 many technical sections in the dark听without getting injured.
Stephanie Howe Violett
With two Western States 100 podiums (one of them a win), a former Speedgoat听50K听course record, and a top-ten UTMB听finish under her belt, Howe Violett has enough ultra experience to know that she doesn鈥檛 need to stress over gear, though she says there are a few items she鈥檚 particular about.听

Nathan Vapor Howe Pack, 12L听($180)
Launched in 2017, the Vapor Howe is Howe听Violett鈥檚 ideal pack鈥攂ecause she helped design it. 鈥淓verything from the sizing to the fit to the location of the pockets鈥 is made听to Howe Violett鈥檚 specifications. The rear kangaroo pocket makes for quick access to stashed layers without losing stride.

The North Face听Ultra Endurance Shoe ($120)
With its welded TPU upper and burly TPU听toe bumper, the Ultra Endurance spells protection听and durability. 鈥淚t has enough grip, without big lugs that don鈥檛 work on wet rock, which is pretty important for UTMB,鈥 with its high-alpine terrain and conditions, Howe Violett says.听鈥淭here are a lot of lightweight shoes that would get destroyed in this race.鈥

Clif听Shot Bloks, Salted Watermelon ($36 for 18)
Howe Violett, who has a Ph.D. in nutrition, knows a thing or two about food鈥攁nd she鈥檚 learned through years of racing what works for her. Salted watermelon Shot Bloks are a staple. 鈥淚 can eat them all day,鈥 she says. Post-race, she鈥檒l have her eye on some nachos. 鈥淭he one thing I need after a race is salty food,鈥 Howe Violett says. She鈥檚 already arranged for her friend, former UTMB听champ听Rory Bosio, to have a plate waiting at the finish line.