Jim Walmsley ultrarunner HOKA ONE ONE Carbon X shoe

HOKA Launches Carbon X Shoe in Massive 100K Record Attempt

Plush cushioning and featherweight materials combine to make the Carbon X a fast running shoe. So fast, in fact, HOKA ONE ONE is flooding a 100K world record attempt with a fleet of professional athletes gunning to make history in the new shoe.

Just a year old, Nao Kazami’s 100K world running record stands at a blistering 6 hours, 9 minutes, 14 seconds. But on Saturday, that record will face one of the most serious and concerted challenges any record has faced when HOKA ONE ONE sets six elite runners loose with one goal: Set the new 100K world record.

HOKA ONE ONE Carbon X racing shoe

Dubbed Project Carbon X, the massive record attempt includes an attempt at the women’s 100K record of 6 hours, 33 minutes, 11 seconds. And five 10-person teams affiliated with HOKA are simultaneously striving for the mixed-gender 10 x 10K relay record.

And to really up the ante, each runner will make the attempt wearing HOKA’s new Carbon X racing shoe. The shoe’s combination of airy mesh and carbon fiber tech keep the weight at just over 8.5 ounces. But of course, the Carbon X maintains the brand’s trademark plush midsole cushioning.

HOKA ONE ONE Carbon X: 100K World Record Attempt

On May 4, HOKA athletes Jim Walmsley, Patrick Reagan, Tyler Andrews, and Mike Wardian will join Yoshiki Takada and IAAF 100K world champion Hideaki Yamauchi in a concerted push to set the fastest 100K mark.

“Project Carbon X celebrates HOKA’s vision of empowering a world of athletes to fly over the Earth,” HOKA ONE ONE president Wendy Yang said in a press release announcing the attempt. “Some of our top athletes will be chasing a new world standard in our most innovative shoe yet, and they’ll be doing it alongside relay teams who are also chasing a world record. The Carbon X is designed for athletes of all types to chase their own personal best.”

On the women’s side, Sabrina Little and Aiko Kanematsu will chase Tomoe Abe’s nearly 20-year-old 100K record (06:33:11). And to cap off the world record assault, HOKA will tackle the mixed-gender 10 x 10 relay with 50 runners.

And every single person will be pounding the pavement in the Carbon X, launching this month.

HOKA Carbon X Racing Shoe

HOKA ONE ONE Carbon X racing shoe

An impressive flyweight, the Carbon X is among HOKA’s lightest shoes to date, weighing a scant 246 grams (8.6 ounces; men’s 8.5). It provides a 5mm heel-toe drop — from the men’s 32-27mm and women’s 30-25mm stack heights.

But the real story resides in the materials. According to HOKA, breathable mesh wraps the foot in the upper while a split carbon-fiber plate supports proper foot placement.

The $180 Carbon X will go live May 15 online at HOKA ONE ONE’s website and at retailers worldwide June 1.

Adam Ruggiero

Adam Ruggiero is the Editor In Chief of GearJunkie.

Adam has been covering daily news and writing about cycling, camping, hiking, and gear of all kinds for 15+ years. Prior to that, Adam lived in Hawaii and Puerto Rico, at which time he realized he’d never have a “normal job.” His pastimes — farming, bike racing, and fitness — provided a gateway to all manner of physical challenges and recreation outdoors.

Based in Kansas City, MO, Adam tests as much gear as he can get his hands, feet (and dog) into each and every day. As editor in chief, he works to maintain GearJunkie’s voice, style, and commitment to accurate and expert reporting across every category.