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List of all Race Series & Organizers of Mud Runs, Obstacle Races, and Adventure Runs


Click on any race series name to see full details about that race and find all upcoming races.

100 Acre Challenge
7 Summits Adventure Race
Adrenaline Run
Alpha Warrior
American Hotshots Extreme Run
Anderock Challenge
Arctic Dash
Ash Kicker
Autumn Daze Craze
Bad Ass America
Baddest Mud Run
Battle Challenge
Beach Derby
Berserker Challenge
Big Dog Brag
Big Nasty Mud Run
Blackheart Challenge
Blue Skies Adventure Race
Bone Frog Challenge
Boulder Mud Race
Brave Soldier Challenge
Buffalo Zombie Mud Run
Cahoots Duo Challenge
Cannonball Rush
Centurion Mud Challenge
Charlotte County BCC
Circus Odelay Thrill Seeker Challenge
Collins Home Mud Run
Conquest Mud Run
Copper Medallion Oktoberfest Race
Courage Challenge
Cross Country Chaos
Dash of the Titans
Del Mar Mud Run
Diamond Hill Challenge
Dirty and Proud
Dirty Dan Dash
Dirty Girl Mud Run
Diva Dash
Doomsday Dash
Easter Mud Hunt
Epic Fail Challenge
Escape The Nightmares
Extreme Mountain Mud Race
Extreme Rampage
Face Your Fears
Farm Fit
Filthy Fun Mud Run
Fire Run
Fitathlon Challenge
Flying Dirty Mud Run
Fustercluck
Gator Tuf Mud Run
GI Dash Undead
Gladiator Dash
GoGirl Mud Run
Goliathon
Got Mud
Great American Mud Run
Ground Zero Survival Run
Guts and Glory Quarry Challenge
Hard Charge
Hell Run
Hero Challenge
Heroes Challenge
Hidden Creek Park Mud Run
Highland Lakes Camp
Hillbilly Hike
Holiday Valley Mudslide
Hot an Dirty Mud Run
Indian Mud Run
Insanity Run
Jail Break Challenge
Judgement Day
KC Timber Challenge
Kiss Me Dirty
KY Foam Run
Lake Eerie Zombie Mud Run
Little Rocks Dirtiest 5K
Lords of the Mud
LoziLu
Macon Mud Run
Man Games
Mankato Zombie Run
Marmion Heroes Mud Run
Max Tracks
Mendon Zombie Run
Met Con Blue
Mighty Mud Dash
Mississippi Mud Run
Monster Challenges
MORE
Muck MS
Mud and Bud Run
Mud and Sweat
Mud Crazy
Mud Dogs
Mud Factor
Mud Gladiators
Mud Mania
Mud Match
Mud N Color
Mud on the Mountain
Mud Sweat and Beers
Mudathlon
Mudder of all Runs
Mudders Day Run
Muddy Bottom Crazy Mud Run
Muddy Duck Dash
Muddy Mama
Muddy Rhino Run
MuddyUp 5k Race
MudManX
Mudsanity
Mudtastik Mud Run
National Prep Race
Northwoods Bad Dash
Oak Runner Trail Run
OffTerrain Movement and Agility
Oklahoma Zombie Run
OutFit Challenge
Panther Run
Pensacola Mud Run
Pretty Muddy
Primal Rush
Pumpkin Patch Mud Run
Race For Kids
RAID Series
Reaper Event
Redneck Run
Reviver Challenge
Ridiculous Obstacle Challenge
Rock in the Mud Challenge
Rock Solid Race
Rocklin Ramble
Romp in the Swamp
Royal Marines Commando Challenge
Ruffin Mudder
Run For The Hills
Run for your Freakn Life
Run the Gauntlet
Run To Death
Running Dead
Running with the Cows
Samurai Sprint Mud Run
Savage Race
Scavenger Dash
Shale Hill Adventure
Soldier Dash
Spartan Race
Special Ops Series
Sqwish Sqwash
Steamboat Mad Mud Run
Stronger Women Stronger World
Summer Muddin
Survival Race
Survive the Farm
Swamp Dash and Bash
Tac Force Challenge
Tampa Mud Race
That Dam Mud Run
The Burner
The Eliminator
The General
The Great Escape Savannah
The Inferno
The MudBug Run
The Siege Race
The Victory Challenge
The X Run
Thunder Challenge
Tipperary Mud Run
Titans Challenge
Torture Trails
Tough Mudder
Tribal Challenge
Tuff Scramblers
Udder Mud Run
Ultimate Mud Run
Unbridled Mud Trials
USMC Ultimate Challenge Mud Run
Viking Obstacle Race
Warrior Dash
Warrior Run Mountain Series
Wicked Mud Run
Wild Warrior Challenge
Wildcat Adventure Race
Wisconsin Zombie Mud Run
World Famous Mud Run
XIP Bypass Mountain Climb
Xtreme Mud Warrior
Yakima Valley
Z Mud Run
Zombie Bolt
Zombie Fun Run
Zombie Run
Zombie Survivor
5K Foam Fest
ABF Mud Run
Adrenaline Rush Sports
Alpine Adventure Challenge
American Mud Race
Andy Alligators Swamp Stomp
Armageddon Ambush
Atlas Race
AZ Mudathon
Badass Dash
Barber Beast on the Bay
BattleFrog Series
Beat the Gauntlet
Berserkr Games
Big Muddy Challenge
Big Red Challenge
Blizzard Blast
Bog Commander
Born Survivor
BozeMonster Challenge
Briarcliff BC Stampede
Building Bridges Mud Run
Call of the Warrior
Capitol Apocalypse 5k Zombie Run
Cerebrun
China Peak Mud Run
Civilian Military Combine
Commander Run
Coon Rapids Dirty Bird
Core Fitness Dirty Dash
Creek Crawl
Crusher Race
Dead 4 Life
Demon Run
Dirt Runner
Dirty Beach Mud Run
Dirty Dog Mud Run
Disaster Run
Dog Waller
Down and Dirty Obstacle Course
Eglin Air Force Base
Epic Mud Run
Escape The Walkers
Extreme Mud Run
Extreme Swamp Romp
Fallen Warrior Challenge
Farm Fun Mud Run
Filthy Fun Run
Firebreather Challenge
Fittpalooza
Fort Wayne Zombie Mud Run
Gaelforce Events
Gem City Gauntlet
Glack Attack
Gladiator Rock n Run
Goliath Challenge
Goose Poop Challenge
Grand Rapids Mud Run
Gretna Gritty
Grumpy Muddah
Habitat Mud Run
Hardcore Mudd Run
HellRunner
Hero Rush
Heroes Mud Run
Hidden Warrior
Highland Mud Run
Hillbilly Mud Run
Hollis Adams Mudders Day Run
Hurricane Mud Flud Run
indoc Elite Warrior Challenge
Iron Warrior Dash
Jailbreak Brevard
Jump Climb Extreme
Kern Dash
Knights Quest Medieval Mud Run
KY Zombie Mud Run
Lake Villa Chamber Mud Run
Long Island Adventure
Louisiana Mud Dash
Luray MUDtoberfest
Mad Mud Run
MAN vs MUD
Marauder Run
Marquette Mountain Mud
Medieval Mud
Men’s Health Urbanathalon
Michigan Dirty Bird Mud Run
Mighty Titan Adventures
Mogollon Monster Mudder
Monster Dash
Mountain Mucker
MuckFest MS
Mud and Chocolate
Mud Brigade
Mud Crusade
Mud Duck Mudder
Mud Fears Me
Mud Guts and Glory
Mud Mash
Mud Mingle
Mud N Fun Viking Run
Mud Stash
Mud Titan
MudCraft
Mudderella
Muddin 4 Life
Muddy Buddy
Muddy Fanatic
Muddy Mates
Muddy Trail Run
MudHeights
Mudocalypse
MudSlam
MudVenture
Nightmare Run
Nuclear Races
Obstacle Apocalypse
Ohio Valley Mud Run
One Tough Cookie
Overcomer Challenge
Patriot Challenge
Pineapple Classic
Primal Challenge
Prison Break Race
Quinte Zombie Zone
Race the Reaper
Raleigh Zombie Escape
Rebel Race
Renegade Playground Challenge
Revolution Runs
River Warrior Mud Run
Rock On Adventures
Rockabilly Riot Urban Challenge
Rogue Alpha Rush
Rough Runner
Royal Mud Man
Rugged Maniac
Run For The Hills Mud Run
Run For Your Lives
Run The Ranch
Run Zombie Run
Running Dirty
Russian River Mud Run
Sand and Misery Challenge
SBSD Mud Run
SEAL Trek
Shropshire Mud Run
South Walton
Special Operators Challenge
Splat Jr Mud Run
St. Clair Scramble
Step Up For Soldiers
Stronghold Challenge
Super Human Challenge
Survival Run
Survivor Mud Run
Swamp Stomp Mud Run
Tactical Titan
Terrain Mud Run
The Battle Run
The Challenge Mud Run
The Few The Proud The Muddy
The Gladiator Games
The Heroes Mud Run
The Mighty Run
The Original Mud Run
The Stampede
The Walking Dead Escape
The Zombie Run
Thunder Run
Tippy Mud Run
Tonka Mud Run
Total Warrior
Tough N Dirty
Trojan Race
Twisted Trail
Udderly Muddy Rugged Run
Ultimate Mud Warrior
UQuest
USO of Missouri Mud Run
Vision Wild Run
Warrior Race
West Texas Zombie Run
Wild Boar Challenge
Wild Wild West Mud Run
Wilderness Survivor Games
Woodland Mud Run
WYLD Mud Run
XRunner
Xtreme Obstacle Challenge
YMCA Adventure Warrior
Z Warrior Sprint
Zombie Charge
Zombie Insanity
Zombie Rundown
5K The Hard Way
ACMHS Race for Recovery
Almighty Mud Run
American Gladiator Series
Amesbury Sports Park
Apex Extreme Run
Armed Services YMCA Mud Run
Atlas Run
Back 2 The Trenches
Badass Mudder
Battle at The Brazos
Beach Beast
Benjamin Dash
Beware of the Beast
Big Muddy Run
Black Hills Mud Run
Blood and Guts
Bold r Dash
Bottega Fitness
Brains and Brawn Run
Buccaneer Rampage
Bushido Challenge
Camp Titan
Caveman Crawl
Challenge-X
Cincy Nation Mud Run
CLC Mud Run
Conquer the Gauntlet
Cooper Challenge
Corn Fed Crucible
Critical Mud
Dash of the Titan
Dead End Race
Devil Dash
Dirty 30
Dirty Bird Mud Run
Dirty Dozen
Distress The Dress
Domus NINER
DucknDodge
Emerald Coast MudRun
Escape the Chase
Extreme Field Day
Extreme Nation
Eye Mud Run
Family Promise Mountain Mud Run
Filthy Five K
Filthy Soles
FIT Challenge
FLX Events
Freefall X-Race
Gasconade Gauntlet
Gettin Muddy For Kids
Gladiator Assault Challenge
Go Ballistic
Goliath Mud Challenge
GORUCK
Grave Digger Race
Grit N Wit
Gut Check Challenge
Hard as Nails
Hell and Back
Hells Hollow Mudd Run
Heroes and Villains Adventure Run
Heroes vs Villains Flag Gauntlet
High Rock Challenge
Hillbilly 5K
Hit and Run 5K
Holy Moly Mud Run
In Your Face 5K
Inferno Run
Irvine Lake
JCB Mud Run
Kalamazoo Mud Run
KidsPeace
Krell Adventure Games
Lago Mad Dash
Lions Chase
Loon Mountain
Love Mud Run
Mach One Mud Run
Magic City Mudder
Mankato Mud Run
March MUDness
Mass Mayhem
Medieval Rush
Merrell Down and Dirty
Michigan Zombie Run
Miles of Mud
MOJO Challenge
Montessori Mudstacle
Mountaineer Mud Run
MuckRuckus MS
Mud and Music Mayhem
Mud Chasers
Mud Dog Run
Mud Endeavor
Mud Gauntlet
Mud Hero
Mud Masters
Mud Monsters Run
Mud Ninja
Mud Sux Run
Mud U
Mudd, Sweat and Tears
Mudders Against Domestic Violence
Muddin for a Cause
Muddy Cheer Challenge
Muddy Madness
Muddy Mayhem
Muddy Vike
MudMan
MudRun Fun
MudSlayers
MudZilla Mud Run
NorCal Mud Run
O2X Summit Challenges
OCR World Championships
Ohio Zombie Run
One Wicked Run
Panic In The Dark
Pawpaw Gauntlet Run
Pirate Plunge Mud Run
Primal Mud Run
Project Mud
R3Ops
Race Your Neighbor
Ram Run
Red White and Blue
Renegade Rage
RhinO Course
Robo Mud Run
Rock Solid Mud Run
Rockin the Desert
Rogue Runner
Rowdy Run
Ruckus Obstacle Race Series
Run Amuck
Run For The King
Run It Like Its Hot
Run The Ridge
Runamuck Challenge
Running Wild Race
Sacramento Zombie Run
Savage Dash
Scattered and Battered
Seamark Mudder
Slippery Saints Mud Run
South West Mudfest
Special Ops Race
Spud Mud Run
Stand Up 4 SEALs
Strong Viking
Summer Daze Craze
Superhero Scramble
Survival Sprint
Swamp Buggy Mud Blast
Swampfoot 4 Mile
Tame The Terrain
Terrapin Adventues
The Battlegrounds
The Dirty Dash
The Gauntlet
The Gladiator Mud Run
The Holt Bolt
The Mud Games
The Rite
The Ultimate Titan Challenge
The Wild Stampede
Thin Mint Sprint
ThunderDash
Titan Challenge
Top Ninjas
Tough Dash
Toughest
True Grit
Two Rivers Mudder Fudder
Ultimate Athlete Games
Ultimate Towner
Urban Warrior Dash
Viking Assault
Walking Dead
Warrior Run
Westchester Medical Center Trauma Mud Run
Wild Rumpus Race
Wild Woodlake Mudder
Windsor Marines Fun Mud Run
Woods of Terror Zombie Mud Run
X-hill-arator
Xtreme Muck Ruck
Xtreme Ranger
Your First Mud Run
Zombie Blood Run
Zombie Escape
Zombie Mud Run
Zombie Rush
100 Acre Challenge
5K Foam Fest
5K The Hard Way
7 Summits Adventure Race
ABF Mud Run
ACMHS Race for Recovery
Adrenaline Run
Adrenaline Rush Sports
Almighty Mud Run
Alpha Warrior
Alpine Adventure Challenge
American Gladiator Series
American Hotshots Extreme Run
American Mud Race
Amesbury Sports Park
Anderock Challenge
Andy Alligators Swamp Stomp
Apex Extreme Run
Arctic Dash
Armageddon Ambush
Armed Services YMCA Mud Run
Ash Kicker
Atlas Race
Atlas Run
Autumn Daze Craze
AZ Mudathon
Back 2 The Trenches
Bad Ass America
Badass Dash
Badass Mudder
Baddest Mud Run
Barber Beast on the Bay
Battle at The Brazos
Battle Challenge
BattleFrog Series
Beach Beast
Beach Derby
Beat the Gauntlet
Benjamin Dash
Berserker Challenge
Berserkr Games
Beware of the Beast
Big Dog Brag
Big Muddy Challenge
Big Muddy Run
Big Nasty Mud Run
Big Red Challenge
Black Hills Mud Run
Blackheart Challenge
Blizzard Blast
Blood and Guts
Blue Skies Adventure Race
Bog Commander
Bold r Dash
Bone Frog Challenge
Born Survivor
Bottega Fitness
Boulder Mud Race
BozeMonster Challenge
Brains and Brawn Run
Brave Soldier Challenge
Briarcliff BC Stampede
Buccaneer Rampage
Buffalo Zombie Mud Run
Building Bridges Mud Run
Bushido Challenge
Cahoots Duo Challenge
Call of the Warrior
Camp Titan
Cannonball Rush
Capitol Apocalypse 5k Zombie Run
Caveman Crawl
Centurion Mud Challenge
Cerebrun
Challenge-X
Charlotte County BCC
China Peak Mud Run
Cincy Nation Mud Run
Circus Odelay Thrill Seeker Challenge
Civilian Military Combine
CLC Mud Run
Collins Home Mud Run
Commander Run
Conquer the Gauntlet
Conquest Mud Run
Coon Rapids Dirty Bird
Cooper Challenge
Copper Medallion Oktoberfest Race
Core Fitness Dirty Dash
Corn Fed Crucible
Courage Challenge
Creek Crawl
Critical Mud
Cross Country Chaos
Crusher Race
Dash of the Titan
Dash of the Titans
Dead 4 Life
Dead End Race
Del Mar Mud Run
Demon Run
Devil Dash
Diamond Hill Challenge
Dirt Runner
Dirty 30
Dirty and Proud
Dirty Beach Mud Run
Dirty Bird Mud Run
Dirty Dan Dash
Dirty Dog Mud Run
Dirty Dozen
Dirty Girl Mud Run
Disaster Run
Distress The Dress
Diva Dash
Dog Waller
Domus NINER
Doomsday Dash
Down and Dirty Obstacle Course
DucknDodge
Easter Mud Hunt
Eglin Air Force Base
Emerald Coast MudRun
Epic Fail Challenge
Epic Mud Run
Escape the Chase
Escape The Nightmares
Escape The Walkers
Extreme Field Day
Extreme Mountain Mud Race
Extreme Mud Run
Extreme Nation
Extreme Rampage
Extreme Swamp Romp
Eye Mud Run
Face Your Fears
Fallen Warrior Challenge
Family Promise Mountain Mud Run
Farm Fit
Farm Fun Mud Run
Filthy Five K
Filthy Fun Mud Run
Filthy Fun Run
Filthy Soles
Fire Run
Firebreather Challenge
FIT Challenge
Fitathlon Challenge
Fittpalooza
FLX Events
Flying Dirty Mud Run
Fort Wayne Zombie Mud Run
Freefall X-Race
Fustercluck
Gaelforce Events
Gasconade Gauntlet
Gator Tuf Mud Run
Gem City Gauntlet
Gettin Muddy For Kids
GI Dash Undead
Glack Attack
Gladiator Assault Challenge
Gladiator Dash
Gladiator Rock n Run
Go Ballistic
GoGirl Mud Run
Goliath Challenge
Goliath Mud Challenge
Goliathon
Goose Poop Challenge
GORUCK
Got Mud
Grand Rapids Mud Run
Grave Digger Race
Great American Mud Run
Gretna Gritty
Grit N Wit
Ground Zero Survival Run
Grumpy Muddah
Gut Check Challenge
Guts and Glory Quarry Challenge
Habitat Mud Run
Hard as Nails
Hard Charge
Hardcore Mudd Run
Hell and Back
Hell Run
HellRunner
Hells Hollow Mudd Run
Hero Challenge
Hero Rush
Heroes and Villains Adventure Run
Heroes Challenge
Heroes Mud Run
Heroes vs Villains Flag Gauntlet
Hidden Creek Park Mud Run
Hidden Warrior
High Rock Challenge
Highland Lakes Camp
Highland Mud Run
Hillbilly 5K
Hillbilly Hike
Hillbilly Mud Run
Hit and Run 5K
Holiday Valley Mudslide
Hollis Adams Mudders Day Run
Holy Moly Mud Run
Hot an Dirty Mud Run
Hurricane Mud Flud Run
In Your Face 5K
Indian Mud Run
indoc Elite Warrior Challenge
Inferno Run
Insanity Run
Iron Warrior Dash
Irvine Lake
Jail Break Challenge
Jailbreak Brevard
JCB Mud Run
Judgement Day
Jump Climb Extreme
Kalamazoo Mud Run
KC Timber Challenge
Kern Dash
KidsPeace
Kiss Me Dirty
Knights Quest Medieval Mud Run
Krell Adventure Games
KY Foam Run
KY Zombie Mud Run
Lago Mad Dash
Lake Eerie Zombie Mud Run
Lake Villa Chamber Mud Run
Lions Chase
Little Rocks Dirtiest 5K
Long Island Adventure
Loon Mountain
Lords of the Mud
Louisiana Mud Dash
Love Mud Run
LoziLu
Luray MUDtoberfest
Mach One Mud Run
Macon Mud Run
Mad Mud Run
Magic City Mudder
Man Games
MAN vs MUD
Mankato Mud Run
Mankato Zombie Run
Marauder Run
March MUDness
Marmion Heroes Mud Run
Marquette Mountain Mud
Mass Mayhem
Max Tracks
Medieval Mud
Medieval Rush
Mendon Zombie Run
Men’s Health Urbanathalon
Merrell Down and Dirty
Met Con Blue
Michigan Dirty Bird Mud Run
Michigan Zombie Run
Mighty Mud Dash
Mighty Titan Adventures
Miles of Mud
Mississippi Mud Run
Mogollon Monster Mudder
MOJO Challenge
Monster Challenges
Monster Dash
Montessori Mudstacle
MORE
Mountain Mucker
Mountaineer Mud Run
Muck MS
MuckFest MS
MuckRuckus MS
Mud and Bud Run
Mud and Chocolate
Mud and Music Mayhem
Mud and Sweat
Mud Brigade
Mud Chasers
Mud Crazy
Mud Crusade
Mud Dog Run
Mud Dogs
Mud Duck Mudder
Mud Endeavor
Mud Factor
Mud Fears Me
Mud Gauntlet
Mud Gladiators
Mud Guts and Glory
Mud Hero
Mud Mania
Mud Mash
Mud Masters
Mud Match
Mud Mingle
Mud Monsters Run
Mud N Color
Mud N Fun Viking Run
Mud Ninja
Mud on the Mountain
Mud Stash
Mud Sux Run
Mud Sweat and Beers
Mud Titan
Mud U
Mudathlon
MudCraft
Mudd, Sweat and Tears
Mudder of all Runs
Mudderella
Mudders Against Domestic Violence
Mudders Day Run
Muddin 4 Life
Muddin for a Cause
Muddy Bottom Crazy Mud Run
Muddy Buddy
Muddy Cheer Challenge
Muddy Duck Dash
Muddy Fanatic
Muddy Madness
Muddy Mama
Muddy Mates
Muddy Mayhem
Muddy Rhino Run
Muddy Trail Run
Muddy Vike
MuddyUp 5k Race
MudHeights
MudMan
MudManX
Mudocalypse
MudRun Fun
Mudsanity
MudSlam
MudSlayers
Mudtastik Mud Run
MudVenture
MudZilla Mud Run
National Prep Race
Nightmare Run
NorCal Mud Run
Northwoods Bad Dash
Nuclear Races
O2X Summit Challenges
Oak Runner Trail Run
Obstacle Apocalypse
OCR World Championships
OffTerrain Movement and Agility
Ohio Valley Mud Run
Ohio Zombie Run
Oklahoma Zombie Run
One Tough Cookie
One Wicked Run
OutFit Challenge
Overcomer Challenge
Panic In The Dark
Panther Run
Patriot Challenge
Pawpaw Gauntlet Run
Pensacola Mud Run
Pineapple Classic
Pirate Plunge Mud Run
Pretty Muddy
Primal Challenge
Primal Mud Run
Primal Rush
Prison Break Race
Project Mud
Pumpkin Patch Mud Run
Quinte Zombie Zone
R3Ops
Race For Kids
Race the Reaper
Race Your Neighbor
RAID Series
Raleigh Zombie Escape
Ram Run
Reaper Event
Rebel Race
Red White and Blue
Redneck Run
Renegade Playground Challenge
Renegade Rage
Reviver Challenge
Revolution Runs
RhinO Course
Ridiculous Obstacle Challenge
River Warrior Mud Run
Robo Mud Run
Rock in the Mud Challenge
Rock On Adventures
Rock Solid Mud Run
Rock Solid Race
Rockabilly Riot Urban Challenge
Rockin the Desert
Rocklin Ramble
Rogue Alpha Rush
Rogue Runner
Romp in the Swamp
Rough Runner
Rowdy Run
Royal Marines Commando Challenge
Royal Mud Man
Ruckus Obstacle Race Series
Ruffin Mudder
Rugged Maniac
Run Amuck
Run For The Hills
Run For The Hills Mud Run
Run For The King
Run for your Freakn Life
Run For Your Lives
Run It Like Its Hot
Run the Gauntlet
Run The Ranch
Run The Ridge
Run To Death
Run Zombie Run
Runamuck Challenge
Running Dead
Running Dirty
Running Wild Race
Running with the Cows
Russian River Mud Run
Sacramento Zombie Run
Samurai Sprint Mud Run
Sand and Misery Challenge
Savage Dash
Savage Race
SBSD Mud Run
Scattered and Battered
Scavenger Dash
SEAL Trek
Seamark Mudder
Shale Hill Adventure
Shropshire Mud Run
Slippery Saints Mud Run
Soldier Dash
South Walton
South West Mudfest
Spartan Race
Special Operators Challenge
Special Ops Race
Special Ops Series
Splat Jr Mud Run
Spud Mud Run
Sqwish Sqwash
St. Clair Scramble
Stand Up 4 SEALs
Steamboat Mad Mud Run
Step Up For Soldiers
Strong Viking
Stronger Women Stronger World
Stronghold Challenge
Summer Daze Craze
Summer Muddin
Super Human Challenge
Superhero Scramble
Survival Race
Survival Run
Survival Sprint
Survive the Farm
Survivor Mud Run
Swamp Buggy Mud Blast
Swamp Dash and Bash
Swamp Stomp Mud Run
Swampfoot 4 Mile
Tac Force Challenge
Tactical Titan
Tame The Terrain
Tampa Mud Race
Terrain Mud Run
Terrapin Adventues
That Dam Mud Run
The Battle Run
The Battlegrounds
The Burner
The Challenge Mud Run
The Dirty Dash
The Eliminator
The Few The Proud The Muddy
The Gauntlet
The General
The Gladiator Games
The Gladiator Mud Run
The Great Escape Savannah
The Heroes Mud Run
The Holt Bolt
The Inferno
The Mighty Run
The Mud Games
The MudBug Run
The Original Mud Run
The Rite
The Siege Race
The Stampede
The Ultimate Titan Challenge
The Victory Challenge
The Walking Dead Escape
The Wild Stampede
The X Run
The Zombie Run
Thin Mint Sprint
Thunder Challenge
Thunder Run
ThunderDash
Tipperary Mud Run
Tippy Mud Run
Titan Challenge
Titans Challenge
Tonka Mud Run
Top Ninjas
Torture Trails
Total Warrior
Tough Dash
Tough Mudder
Tough N Dirty
Toughest
Tribal Challenge
Trojan Race
True Grit
Tuff Scramblers
Twisted Trail
Two Rivers Mudder Fudder
Udder Mud Run
Udderly Muddy Rugged Run
Ultimate Athlete Games
Ultimate Mud Run
Ultimate Mud Warrior
Ultimate Towner
Unbridled Mud Trials
UQuest
Urban Warrior Dash
USMC Ultimate Challenge Mud Run
USO of Missouri Mud Run
Viking Assault
Viking Obstacle Race
Vision Wild Run
Walking Dead
Warrior Dash
Warrior Race
Warrior Run
Warrior Run Mountain Series
West Texas Zombie Run
Westchester Medical Center Trauma Mud Run
Wicked Mud Run
Wild Boar Challenge
Wild Rumpus Race
Wild Warrior Challenge
Wild Wild West Mud Run
Wild Woodlake Mudder
Wildcat Adventure Race
Wilderness Survivor Games
Windsor Marines Fun Mud Run
Wisconsin Zombie Mud Run
Woodland Mud Run
Woods of Terror Zombie Mud Run
World Famous Mud Run
WYLD Mud Run
X-hill-arator
XIP Bypass Mountain Climb
XRunner
Xtreme Muck Ruck
Xtreme Mud Warrior
Xtreme Obstacle Challenge
Xtreme Ranger
Yakima Valley
YMCA Adventure Warrior
Your First Mud Run
Z Mud Run
Z Warrior Sprint
Zombie Blood Run
Zombie Bolt
Zombie Charge
Zombie Escape
Zombie Fun Run
Zombie Insanity
Zombie Mud Run
Zombie Run
Zombie Rundown
Zombie Rush
Zombie Survivor