WHAT ARE THE ENDURANCE SERIES FORMATS?

There are three different events formats in the Endurance Series. In order of shortest to longest, they are Tough Mudder Infinity, Toughest Mudder, and World's Toughest Mudder.

HOW LONG ARE ENDURANCE SERIES EVENTS

Endurance Series events don't have a fixed distance -- they have a fixed time limit. The challenge is simple: complete as many laps as you can before time runs out. Tough Mudder Infinity events are 8 hours long, beginning Saturday morning. Toughest Mudder is 12 hours, beginning near sundown on Saturday and ending on Sunday morning. World's Toughest Mudder is a full 24-hours, beginning on Saturday morning and ending on Sunday.

ARE THE ENDURANCE SERIES EVENTS COMPETITIVE?

Sort of. Unlike most Tough Mudder events, the events in the Endurance Series have timing chips and leaderboards; however, the expectation is that the athletes will uphold the Tough Mudder values, including helping those around them, These events are ultimately about seeing what you're capable of, not leaving other athletes in the mud.

WHAT IS THE HOLY GRAIL?

The Holy Grail is your prize for successfully finishing one of each Endurance Series event in the same calendar year - including Tough Mudder Infinity, Toughest Mudder, and World's Toughest Mudder.

WHAT IS THE UNHOLY GRAIL?

For those looking for a more intense experience within a single event weekend, the Unholy Grail is available at three event weekends in 2023. Earn this exclusive medal by completing a 15K and 5K on Saturday, a 10K and 5K on Sunday, and 40km overnight. For those keeping score at home - that’s a minimum of 75km in exchange for a really cool scrap of metal.

HOW DO I EARN A SPOT ON THE HOLY GRAIL LEADERBOARD?

We keep a running tally of all mileage completed at Tough Mudder Infinity, Toughest Mudder, and World's Toughest Mudder within a calendar year. The leaderboard is updated a few days after each Endurance Series event to reflect the current standings. At the end of the year, the winners will earn a Season Pass Plus and a custom embroidered jacket.

Tough Mudder Endurance Series

ENDURANCE SERIES

ARE YOU TOUGH ENOUGH?

The Endurance Series ties our three most unforgiving events into the ultimate yearlong test of your toughness and grit.

Run as many laps of our legendary obstacle courses as you can in 8, 12, or 24 hours (with wickedly inventive penalties to book) to find just how far you can bend your bounderies.

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ENDURANCE SERIES EVENTS

TOUGH MUDDER INFINITY

TIME: 8 hours (Sat)

LAP DISTANCE: 5km & 15km

OBSTACLES: 13+

RECORD: 86km

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AMERICA’S TOUGHEST MUDDER

TIME: 12 hours (Sat-Sun)

LAP DISTANCE: 10km

OBSTACLES: 20+

RECORD: 100km

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WORLD’S TOUGHEST MUDDER

TIME: 24 hours (Sat-Sun)

LAP DISTANCE: 5 miles

OBSTACLES: 20+

RECORD: 115 mi.

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TIE IT ALL TOGETHER

HOLY GRAIL

Each season we award the Holy Grail to every Mudder that manages to finish Tough Mudder Infinity, Toughest Mudder and World’s Toughest Mudder within a single year.

Up to the challenge? Follow along and get stuck in with our Holy Grail Hub.