The 10 Longest And Most Grueling Ultramarathons On The Planet

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00:00The 10 longest and most grueling ultramarathons on the planet.

00:05Barclay Marathons.

00:07The infamously brutal five-loop race in Tennessee's Frozen Head.

00:1160-hour limit, extreme elevation, quirky entry, and only 20 finishers.

00:17Badwater, 135.

00:19A scorching hot, 135-mile sufferfest from Death Valley to Mount Whitney.

00:24It includes 20,000 feet of climbing and has a 48-hour limit.

00:28Yoshihiko Ishikawa set the record in 2019 at 21 hours 33 minutes and 1 second.

00:35The Jungle Ultra.

00:36Amazon Rainforest Ultra with shifting routes, runners battle choking humidity,

00:42dense undergrowth, raging rivers, and hazardous wildlife throughout.

00:47The Tunnel.

00:49A monotonous 200-mile challenge, 100 out-and-backs in baths combed-down tunnel,

00:55nightly darkness, and in 2025, Alex Marshall set the record at 41 hours 16 minutes and 43 seconds.

01:04La Ultra.

01:05The High.

01:06A brutal 333-kilometer challenge that traverses through the mountains in the Ladakh region.

01:12It includes three passes above 17,500 feet, has thin air, frigid temperatures,

01:17and has relentless climbs that punish participants.

01:22Dragon's Back Race.

01:24A technical 380-kilometer traverse across Wales' rugged ridgelines, 54,000 feet of climbing and frequent fog.

01:32In 2024, Max King set the record at 45 hours, 39 minutes, and 18 seconds.

01:40Moab 240.

01:42An iconic 240-mile Utah loop through canyonlands and arches has a 31,000 feet gain and a 117-hour cutoff time.

01:53In 2021, Michael McKnight set the record at 55 hours, 49 minutes, and 58 seconds.

02:01Last Man Standing.

02:02Ultra Marathon.

02:04A backyard-style format, 4.2-mile loop each hour until one remains.

02:082025 ended after 56 laps, totaling 235.2 miles.

02:16The Spine.

02:17A grueling 268-mile Pennine Way traverse.

02:21Winter edition is notorious.

02:23In 2024, Jack Scott set the record at 72 minutes and 55 seconds while sleeping for under an hour.

02:31Yukon Arctic Ultra.

02:34Sub-Zero Yukon Epic now includes 600 kilometers.

02:36In 2025, Mathieu Blanchard finished hauling a sled after seven days, 77 hours.