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Best of Tough Mudder

With no podiums, winners or clocks to race against, Tough Mudder's 10-12 mile mud and obstacle course tests your physical strength, stamina and mental grit.
SI Staff|
Best of Tough Mudder
Best of Tough Mudder

Best of Tough Mudder

2015-Tough-Mudder-Sparta-337e5f3574f64e2a89d0051277e9ff99-0.jpg
John Minchillo/AP
2011-Tough-Mudder-Englishtown-GettyImages-133333265_master.jpg
Michael Nagle/Bloomberg via Getty Images
2012-Tough-Mudder-Englishtown-154554961_10.jpg
Bruce Bennett/Getty Images
2011-Tough-Mudder-Englishtown-GettyImages-133333263_master.jpg
Michael Nagle/Bloomberg via Getty Images
2012-Tough-Mudder-Englishtown-154477882_10.jpg
Bruce Bennett/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480124843.jpg
Quinn Rooney/Getty Images
2012-Tough-Mudder-Cheshire-England-GettyImages-156661985_master.jpg
Shirlaine Forrest/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131341.jpg
Quinn Rooney/Getty Images
2012-Tough-Mudder-Cheshire-England-GettyImages-156661994_master.jpg
Shirlaine Forrest/Getty Images
2012-Tough-Mudder-Cheshire-England-GettyImages-156662007_master.jpg
Shirlaine Forrest/Getty Images
2014-Tough-Mudder-Germany-WIRE000047817.jpg
Jens Meyer/AP
2012-Tough-Mudder-Englishtown-154478262_10.jpg
Bruce Bennett/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480124609.jpg
Quinn Rooney/Getty Images
2013-Tough-Mudder-Gerrardstown-WV-450r118130420015_Tough_Mudder.jpg
Zuma Press/Icon Sportswire
2012-Tough-Mudder-Cheshire-England-GettyImages-156662010_master.jpg
Shirlaine Forrest/Getty Images
2011-Tough-Mudder-Englishtown-GettyImages-133333266_master.jpg
Michael Nagle/Bloomberg via Getty Images
2012-Tough-Mudder-Englishtown-154479568_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Sydney-WIRE000026526.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Cheshire-England-GettyImages-156662022_master.jpg
Shirlaine Forrest/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480130953.jpg
Quinn Rooney/Getty Images
2012-Tough-Mudder-Englishtown-154555269_10.jpg
Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-154479580_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Sydney-GettyImages-152894292_master.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Englishtown-154477863_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-154480257_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Cheshire-England-GettyImages-156662031_master.jpg
Shirlaine Forrest/Getty Images
2012-Tough-Mudder-Englishtown-154480279_10.jpg
Mike Lawrie/Getty Images
2012-Tough-Mudder-Englishtown-154480270_10.jpg
Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
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Mike Lawrie/Getty Images
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Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-154481853_10.jpg
Bruce Bennett/Getty Images
2013-Tough-Mudder-Seneca-Hunt-Club-GettyImages-169671121_master.jpg
Stan Grossfeld/The Boston Globe via Getty Images
2012-Tough-Mudder-Englishtown-154535638_10.jpg
Bruce Bennett/Getty Images
2013-Tough-Mudder-Scotland-GettyImages-177579971_master.jpg
Jeff J Mitchell/Getty Images
2011-Tough-Mudder-Englishtown-GettyImages-133333257_master.jpg
Michael Nagle/Bloomberg via Getty Images
2012-Tough-Mudder-Sydney-WIRE000026515.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154478264_master.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-154555231_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-154555299_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-154555158_10.jpg
Bruce Bennett/Getty Images
2013-Tough-Mudder-Scotland-GettyImages-177582982_master.jpg
Jeff J Mitchell/Getty Images
2012-Tough-Mudder-Englishtown-154557257_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Sydney-WIRE000026900.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Englishtown-154557319_10.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154477886_master.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154479403_master.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154479565_master.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154480292_master.jpg
Mike Lawrie/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154535870_master.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154557413_master.jpg
Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
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Bruce Bennett/Getty Images
2012-Tough-Mudder-Englishtown-GettyImages-154569846_master.jpg
Bruce Bennett/Getty Images
2013-Tough-Mudder-Michigan-46520130630035_ToughMudder.jpg
Tony Ding/Icon Sportswire
2012-Tough-Mudder-Englishtown-WIRE000026768.jpg
Bruce Bennett/Getty Images
2014-Tough-Mudder-Germany-AP_944171534195.jpg
Jens Meyer/AP
2012-Tough-Mudder-Englishtown-WIRE000026901.jpg
Bruce Bennett/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480116821.jpg
Quinn Rooney/Getty Images
2012-Tough-Mudder-Sydney-152657954.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Englishtown-WIRE000026902.jpg
Bruce Bennett/Getty Images
2012-Tough-Mudder-Sydney-152894391.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Sydney-GettyImages-152894331_master.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Sydney-GettyImages-152894431_master.jpg
Ryan Pierse/Getty Images
2014-Tough-Mudder-London-457889064.jpg
Justin Setterfield/Getty Images
2013-Tough-Mudder-Gerrardstown-WV-450r118130420001_Tough_Mudder.jpg
Zuma Press/Icon Sportswire
2013-Tough-Mudder-Gerrardstown-WV-450r118130420016_Tough_Mudder.jpg
Zuma Press/Icon Sportswire
2013-Tough-Mudder-Scotland-GettyImages-177583087_master.jpg
Jeff J Mitchell/Getty Images
2013-Tough-Mudder-Seneca-Hunt-Club-GettyImages-169671132_master.jpg
Stan Grossfeld/The Boston Globe via Getty Images
2013-Tough-Mudder-Seneca-Hunt-Club-GettyImages-169671146_master.jpg
Stan Grossfeld/The Boston Globe via Getty Images
2013-Tough-Mudder-Seneca-Hunt-Club-GettyImages-169671152_master.jpg
Stan Grossfeld/The Boston Globe via Getty Images
2014-Tough-Mudder-Germany-77b735d2c9894ebf92c8df0afeb629b6-0.jpg
Jens Meyer/AP
2014-Tough-Mudder-Germany-AP_240257721891.jpg
Jens Meyer/AP
2014-Tough-Mudder-Germany-AP_298441896494.jpg
Jens Meyer/AP
2014-Tough-Mudder-London-457888340.jpg
Justin Setterfield/Getty Images
2014-Tough-Mudder-London-457888380.jpg
Justin Setterfield/Getty Images
2014-Tough-Mudder-London-457888382.jpg
Justin Setterfield/Getty Images
2014-Tough-Mudder-London-GettyImages-486848445_master.jpg
Justin Tallis/AFP/Getty Images
2014-Tough-Mudder-London-457888392.jpg
Justin Setterfield/Getty Images
2014-Tough-Mudder-London-457889072.jpg
Justin Setterfield/Getty Images
2014-Tough-Mudder-London-457889078.jpg
Justin Setterfield/Getty Images
2014-Tough-Mudder-London-GettyImages-487118431_master.jpg
Tolga Akmen/Anadolu Agency/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480116459.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480116597.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480116697.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480116797.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Westbrook-Maine-GettyImages-454038852_master.jpg
Gabe Souza/Portland Press Herald via Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480117785.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480124391.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480124397.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480124827.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480125155.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480125335.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480125797.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480130705.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131027.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131039.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131193.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131269.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131297.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480130759.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Westbrook-Maine-GettyImages-454038054_master.jpg
Gabe Souza/Portland Press Herald via Getty Images
2014-Tough-Mudder-Westbrook-Maine-GettyImages-454038132_master.jpg
Gabe Souza/Portland Press Herald via Getty Images
2014-Tough-Mudder-Phillip-Island-Australia-480131337.jpg
Quinn Rooney/Getty Images
2014-Tough-Mudder-Westbrook-Maine-GettyImages-454039104_master.jpg
Gabe Souza/Portland Press Herald via Getty Images
2015-Tough-Mudder-Westbrook-Maine-GettyImages-490423028_master.jpg
Derek Davis/Portland Press Herald via Getty Images
2012-Tough-Mudder-Sydney-WIRE000026513.jpg
Ryan Pierse/Getty Images
2015-Tough-Mudder-Westbrook-Maine-GettyImages-490423030_master.jpg
Derek Davis/Portland Press Herald via Getty Images
2012-Tough-Mudder-Sydney-WIRE000026514.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Sydney-WIRE000026525.jpg
Ryan Pierse/Getty Images
2012-Tough-Mudder-Sydney-WIRE000026523.jpg
Ryan Pierse/Getty Images
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Ryan Pierse/Getty Images
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Ryan Pierse/Getty Images
2012-Tough-Mudder-Sydney-WIRE000026527.jpg
Ryan Pierse/Getty Images
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Ryan Pierse/Getty Images
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