2 events
29
2 events,
29
Columbus Ohio Black Diamond Obstacle Memorial Day Mayhem 2017
South Carolina Spartan Race Jimmie Johnson Foundation Fit Fest 2017
0 events
30
0 events
31
0 events
1
46 events
2
46 events,
2
Olathe Kansas OCC Obstacle Challenge Course 2017
Abbotsford Canada 5K Foam Fest Canada 2017
Colorado Springs Colorado BigDogBrag Mud Run 2017
Elk City Oklahoma Run the Ranch 2017
Blakeslee Pennsylvania Krell Adventure Games Summer 2017
Westport Massachusetts Samurai Sprint Mud Run 2017
Payson Arizona Mogollon Monster Mudda 2017
Lawrenceburg Indiana MudStash Summer 2017
Pompano Beach Florida Pompano Beach Fitness Race 2017
Milton Keynes United Kingdom Color Obstacle Rush 2017
Hendersonville North Carolina Mad Mountain Mud Run 2017
Wild Rose Wisconsin Alpine Adventure Challenge 2017
Leicester United Kingdom Wolf Run Summer 2017
Michigan Tough Mudder 2017
Kent United Kingdom The Elements OCR 2017
Greenwood Delaware Delmarva Dirt Dash 2017
Philadelphia MuckFest MS 2017
Mukwonago Wisconsin Mukwonago YMCA Family Mud Run 2017
Oslo Norway Tough Viking 2017
Fort Worth Texas Kids Obstacle Challenge 2017
Virginia Spartan Race Spartan Super 2017
Michigan Tough Mudder Half 2017
Gwinnett Georgia Jail-Break Challenge 2017
Cincinnati Ohio Beast of the East Fork 2017
Boyne Falls Michigan Dirty Dog Dash 2017
Kent United Kingdom Gung-Ho! 2017
Pincher Creek Alberta Canada Wild Rose Rough Runner 2017
South New Jersey Goliathon Spring 2017
New Salem North Dakota Medieval Rush 2017
Minneapolis Minnesota Badass Dash 2017
Altoona Alabama Duellator Sprint Summer 2017
Lake Ontario New York Survival Beach 2017
Kentucky Tough Mudder Half 2017
Tri-State New York #1 Spartan Race Spartan Sprint 2017
Kitchener Canada Rugged Maniac 2017
Canada XMAN Race Montreal 2017
Cardiff United Kingdom The Gauntlet Games 2017
Ottawa Canada Mud Hero 6K 2017
Portland Oregon Terrain Racing Mud Run 2017
Westminster Colorado Hard As Nails 2017
North Carolina Warrior Dash 2017
Monterey California Spartan Race Spartan Super 2017
Kentucky Tough Mudder 2017
Dallas Texas Conquer the Gauntlet 2017
Stockholm Sweden Toughest 2017
60 events
3
60 events,
3
South Plainfield New Jersey Your First Mud Run 2017
Leicester United Kingdom Wolf Run Summer 2017
Michigan Tough Mudder 2017
Western Australia XLR8 Obstacle Course 2017
Philadelphia MuckFest MS 2017
Virginia Spartan Race Spartan Sprint 2017
Michigan Tough Mudder Half 2017
Frankfurt Germany OCR European Championship 2017
Kentucky Tough Mudder Half 2017
Tri-State New York #1 Spartan Race Spartan Sprint 2017
Canada XMAN Race Montreal 2017
Ottawa Canada Mud Hero 6K 2017
Ottawa Canada Mud Hero Ultra 10K 2017
Kentucky Tough Mudder 2017
14 events
4
0 events
5
0 events
6
0 events
7
2 events
8
2 events,
8
Tri-State New York Spartan Race Spartan Time Trials 2017
Collingwood Ontario Canada Met Con Blue 2017
45 events
9
45 events,
9
Liberal Kansas Arkalon Assault 5K Obstacle Run 2017
Dover Florida Tactical Titan 2017
Unity Village Missouri Kansas City Dirty Duo 5K 2017
Marseilles Illinois Ignite Fitness 2017
Wichita Kansas Wichita Gladiator Dash 2017
San Diego California The EPIC Series Summer 2017
Osage City Kansas Cross Country Chaos 2017
Rochester New York The Greece Gauntlet 2017
Montreal Canada Dead End Race Spring 3K 2017
Ontario Canada Sunrise Rotary Roughneck Mud Run 2017
Austin Texas Kids Obstacle Challenge 2017
Montreal Canada Dead End Race Spring Team 3K 2017
London United Kingdom Color Obstacle Rush 2017
Queensland Australia Kickass Obstacle Race 2017
Ottawa Ohio Challenged Champions Obstacle River Run 2017
Raleigh North Carolina Warrior Wolf 2017
Cullman Alabama Reverse the Cycle Obstacle Challenge 2017
Sydney Australia True Grit 2017
Quantico Virginia Marine Corps Marathon Run Amuck 2017
Morganton North Carolina Bear Crawl 2017
Vancouver Canada Spartan Race Spartan Sprint 2017
Niagara Canada Grapes of Wrath Mud Run 2017
Pennsylvania Jonestown KOA Hero’s Challenge 2017
Sacramento California Tough Mudder 2017
Camp Pendleton California Marine Corps Mud Run 2017
Sydney Australia True Grit Australian 24H Enduro 2017
Seattle Washington Rugged Maniac 2017
Vail Colorado GoPro Mountain Games 2017
Ottawa Canada Jump! Duck! Run! 2017
Bottineau North Dakota Iron Will Warrior Challenge 2017
Nanaimo Canada 5K Foam Fest Canada 2017
Virginia Tough Mudder 2017
Tri-State New York #2 Spartan Race Spartan Sprint 2017
Dallas Texas AT&T Stadium Spartan Race Stadium Sprint 2017
Virginia Tough Mudder Half 2017
Cumbria United Kingdom Gelt Gladiator 2017
Collingwood Ontario Canada Met Con Blue 2017
Usk United Kingdom Dirty Dozen Races South Wales 2017
Atlanta Georgia Terrain Racing Mud Run 2017
Copper Mountain Colorado Dirty Girl Mud Run 2017
Essex United Kingdom The Muddy Dog Challenge 2017
Chicago Illinois Spartan Race Spartan Super 2017
Nottinghamshire United Kingdom Airfield Anarchy Mudfest 2017
57 events
10
57 events,
10
Sacramento California Tough Mudder 2017
Camp Pendleton California Marine Corps Mud Run 2017
Vancouver Canada Spartan Race Spartan Super 2017
Bonner Springs Kansas Wild Women KC Timber Challenge (WWTC) 2017
Queensland Australia Kickass Obstacle Race 2017
Omaha Nebraska Mud Factor 2017
Shizuoka Prefecture Japan Camp Fuji World Famous Mud Run 2017
Sydney Australia True Grit 2017
Nottinghamshire United Kingdom Airfield Anarchy Mudfest 2017
Anchorage Alaska Mud Factor 2017
Virginia Tough Mudder 2017
Virginia Tough Mudder Half 2017
South Nutfield United Kingdom Back 2 The Trenches The Big Push Summer 2017
Chicago Illinois Spartan Race Spartan Sprint 2017
14 events
11
0 events
12
0 events
13
0 events
14
0 events
15
39 events
16
39 events,
16
Gadsden Alabama Barbarian Challenge 2017
Oak Harbor Ohio Black Swamp Dash 2017
Marseilles Illinois Dirt Runner Night Run I 2017
Whistler Canada Tough Mudder 2017
Belton Texas ASCO Spartacus Dash 2017
Lancaster United Kingdom Badass Mucker Summer 2017
Quebec Canada Stoneman Race 2017
Buffalo New York Muddy Buffalo 2017
Castlewellan United Kingdom Fin Fun Mud Run 2017
Whistler Canada Tough Mudder Half 2017
Sandnes Norway TrolljegerPrøven 2017
Denver Colorado Kids Obstacle Challenge 2017
Semora North Carolina Down N Dirty Mud Run 2017
Englishtown New Jersey Bone Frog Challenge 2017
Newcastle United Kingdom Color Obstacle Rush 2017
Surrey United Kingdom Parkinson’s UK Muddy Mission 2017
Snohomish Washington Muddy Mortal 2017
Whistler Canada Tough Mudder Canada’s Toughest Mudder 2017
Southampton United Kingdom Gung-Ho! 2017
Wisconsin Terrain Racing Mud Run 2017
Burlington Wisconsin Mud Sweat and Boobs 2017
Colorado Springs Colorado Mud Factor 2017
Holmdel New Jersey HappyFest Obstacle Course & Festival 2017
Franklin Massachusetts 24 Hours Green Beret Challenge 2017
Quebec Canada Call of Valhalla 2017
Larwill Indiana Whitko Extreme Challenge 2017
Fergus Falls Minnesota The Viking Challenge 2017
Tamworth United Kingdom Zeus Races OCR Heaven 2017
London England Toughest 2017
Savannah Georgia JCB Mudfest 2017
Sun Peaks Canada 5K Foam Fest Canada 2017
Ellicottville New York Holiday Valley Mudslide 2017
Wacken Germany Fisherman’s Friend StrongmanRun 2017
Portland Oregon Rugged Maniac 2017
Boston Massachusetts Spartan Race Spartan Sprint 2017
Indianapolis Indiana Hollis Adams Mud Run 2017
Pennsylvania Savage Race 2017
Montreal Canada Mud Hero 6K 2017
North Vernon Indiana Tame the Terrain 2017
46 events
17
46 events,
17
Oak Harbor Ohio Black Swamp Dash 2017
Whistler Canada Tough Mudder 2017
Southern New York Your First Mud Run 2017
Dunbar United Kingdom Shark Life OCR 2017
Whistler Canada Tough Mudder Half 2017
Marseilles Illinois Dirt Runner D.R.X Games VI 2017
Boston Massachusetts Spartan Race Spartan Sprint 2017
7 events
18
0 events
19
0 events
20
0 events
21
0 events
22
33 events
23
33 events,
23
Fremont Nebraska 5K The Hard Way 2017
Saint Cloud Florida Robo Mud Run 2017
Henley on Thames United Kingdom The Little Welly Goes Wild 2017
Arbroath United Kingdom Royal Marines Commando Challenge 2017
Howell Michigan Iron Grip Ninja Competition 2017
Victoriaville Canada Prison Break Race 2017
Coshocton Ohio Indian Mud Run 2017
Newport Beach California Liquid Run 2017
Garwin Iowa The Ridge Run 2017
Wallingford Connecticut Gaylord Gauntlet 2017
New Jersey MuckFest MS 2017
Pueblo Colorado Big Dog Brag Mud Run 2017
Nova Scotia Canada NovaStrong 2017
Parma Italy Farm Run 2017
Chicago Illinois Kids Obstacle Challenge 2017
Torrington Connecticut WYLD Obstacle Mud Run 2017
Derby West United Kingdom Color Obstacle Rush 2017
Mandeville Louisiana Battle Races 2017
Derry-Londonderry United Kingdom Hard as Oak 2017
Toronto Canada Spartan Race Spartan Super 2017
Bristol United Kingdom Rough Runner 2017
Wisconsin Lambeau Field Spartan Race Stadium Sprint 2017
Boise Idaho Spartan Race Spartan Sprint 2017
London United Kingdom The Gauntlet Games 2017
Minnesota Spartan Race Spartan Sprint 2017
New York City New York Rugged Maniac 2017
Midlands United Kingdom The Suffering Obstacle Race Summer 2017
Red Deer Canada 5K Foam Fest Canada 2017
Cambridge United Kingdom Go Insane Family Fun Day 2017
New England Tough Mudder 2017
Leeds United Kingdom Total Warrior Challenge 2017
Pittsburgh Pennsylvania Terrain Racing Mud Run 2017
Oklahoma City Oklahoma Conquer the Gauntlet 2017
45 events
24
45 events,
24
Dorking United Kingdom Natural Fitness Company Mud Kids Summer 2017
Newport Beach California Liquid Run 2017
Eureka Missouri Crusher Race 2017
New Jersey MuckFest MS 2017
Toronto Canada Spartan Race Spartan Sprint 2017
Derry-Londonderry United Kingdom Hard as Oak 2017
Bristol United Kingdom Rough Runner 2017
Surrey United Kingdom Pukka Races World War Run 2017
Midlands United Kingdom The Suffering Obstacle Race Summer 2017
Cambridge United Kingdom Go Insane Summer 2017
New England Tough Mudder 2017
Leeds United Kingdom Total Warrior Challenge 2017
12 events
25
0 events
26
1 event
27
1 event,
27
Minnesota Spartan Race Spartan Sprint 2018
1 event
28
2 events
29
2 events,
29
Perry Georgia Green Beret Challenge Behind Enemy Lines Urban Survival 2017
Biddinghuizen Netherlands OCR European Championships Short Course 2017
12 events
30
12 events,
30
Tilburg Netherlands Obstacle World Highland Edition 2017
Crandon Wisconsin Legionnaire Mud Challenge 2017
Southampton United Kingdom Active Warrior 2017
Amanda Ohio MIT Tough Team The Nest III Summer 2017
London United Kingdom Judgement Day 2017
Amneville France The Mud Day 2017
Bath United Kingdom Color Obstacle Rush 2017
Flagstaff Arizona Terrain Racing Mud Run 2017
Western Australia South West Mudfest 2017
Leduc Canada 5K Foam Fest Canada 2017
16 events
1
16 events,
1
Tilburg Netherlands Obstacle World Highland Edition 2017
London United Kingdom Judgement Day 2017
Gosfield United Kingdom BlitzFitMe BlitzXtreme Run II 2017
Biddinghuizen Netherlands OCR European Championships Team Race 2017
Wolverhampton United Kingdom Tough Guy The Original 2017
Tartu Estonia Heroes Obstacle Race Tartu 2017
6 events
2
