United States
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Alabama1
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Alaska
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Arizona3
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Arkansas2
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California21
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Colorado4
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Connecticut2
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Delaware
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District of Columbia1
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Florida23
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Georgia7
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Hawaii2
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Idaho2
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Illinois8
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Indiana11
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Iowa2
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Kansas4
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Kentucky4
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Louisiana
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Maine4
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Maryland3
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Massachusetts3
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Michigan4
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Minnesota1
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Mississippi
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Missouri4
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Montana1
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Nebraska
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Nevada4
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New Hampshire
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New Jersey5
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New Mexico
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New York7
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North Carolina14
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North Dakota
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Ohio7
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Oklahoma3
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Oregon1
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Pennsylvania4
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Puerto Rico
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Rhode Island1
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South Carolina4
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South Dakota
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Tennessee5
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Texas19
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Utah5
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Vermont7
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Virginia7
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Washington5
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West Virginia2
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Wisconsin1
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Wyoming
Obstacle Race Calendar United States 2026-2027
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
Explore the best obstacle runs in the United States for 2026-2027! Our updated list features 217 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
August 2026
Dive into the Muddy Dash on August 15, 2026 at DREAM Park near Philadelphia for a playful obstacle run through mud pits, foam fun, and a lively post race party. Choose Value for a finisher medal and party access or go VIP for extra swag and perks.
Take on the Face the Forest 5K at Thomas Jefferson's Poplar Forest in Lynchburg VA on August 15, 2026. This muddy 3.1 mile obstacle course offers competitive and casual waves, and proceeds support Poplar Forest educational programs.
Get muddy at the Black Swamp Mud Run, a 5k in Oak Harbor on August 22, 2026 featuring more than 20 obstacles with challenge and Xtreme options for every ability. Every finisher earns a medal and proceeds support Ronald McDonald House Charities.
Conquer scenic trails, cold river crossings and Spartan obstacles at the 2026 NorCal Spartan Weekend, Aug 29 to 30 at Mahon Ranch in Elk Grove. Choose Sprint, Super or Kids races, join as a team or volunteer for a weekend of muddy fun.
Tough Mudder Chicago on Aug 29, 2026 brings muddy obstacle course fun to Rockford Airport with fan favorites like Berlin Walls and Arctic Enema. Chill in Mudder Village with food, live music and finisher swag after the 5K, 15K or Infinity.
A weekend of Spartan obstacle races at Summit Bechtel Reserve on Aug 29 and 30, 2026 features Sprint, Super, Beast and kids distances across steep terrain with water features and a suspension bridge. Team entries and service member discounts are offe..
Get ready to get muddy at One Bad Mud Run, a 3 mile obstacle course through woods and creek at Phil Moore Park on Aug 29, 2026. Open to ages 10 and up with a free kids area, the course has at least 20 obstacles and a wash off station.
Get muddy at Muddy Dash Maryland on August 29, 2026 at Budds Creek Motocross Park with an up to 3 mile obstacle course full of mud pits and surprises. Run, walk, crawl and join the post race party with VIP perks available.
September 2026
Test your limits at The Ultimate SUCK, an on farm endurance challenge in rural Illinois with 36 hour, 12 hour and 4 hour formats. Camp by the course, push through the night, and celebrate with a bonfire and breakfast.
Get muddy and make memories at the Sterling Down and Dirty 5K Obstacle Race at Stratford Short Beach on September 5, 2026. Run or walk through 18 plus obstacles with family and friends while raising funds for Sterling Community Center.
Get muddy at the Pittsburgh Muddy Dash on September 5, 2026 at Switchback MX, with mud pits, on course obstacles and a festival style post race party featuring music and on site competitions. Fun for racers and spectators.
Get muddy and test your grit at Terrain Race in Ogden's Golden Spike Event Center on September 5, 2026. Tackle a 5K with 15+ obstacles or bring the kids for the Mini Monkey half mile, then enjoy food, music, and festival fun for all.
Tackle more than 25 obstacles across a scenic 4 mile course at Conquer The Gauntlet on September 12, 2026 at 181 Ranch in Bixby, Oklahoma. Families welcome with kids course and competitive and open waves for all ability levels.
Get muddy at the Fort Gordon Marine Mud Challenge on September 12, 2026. This 4 mile off road course features 30 plus obstacles, stream crossings, hills and plenty of mud for timed and competitive runners seeking a gritty, fun challenge.
Conquer high altitude trails at Bear Mountain with Tough Mudder Big Bear, featuring rugged 10K and 5K courses with icons like Funky Monkey and Block Ness Monster. Finishers get swag, a shirt and a post race drink in Mudder Village.
Get muddy at Muddy Dash Detroit on Sept 12, 2026 in Mt Morris, Michigan, a fun noncompetitive course of a few miles with a dozen mud obstacles where costumes are welcome. Celebrate afterward at a lively festival with food, music and drinks.
Take on the Spartan Stadion at Angel Stadium of Anaheim, a 5 km course using bleachers and obstacles on the field for a unique high energy challenge. Family friendly with a kids race plus team and volunteer options to save on entry.
Tackle muddy obstacles at the Dirty Dozen 5K and Fun Run on September 12, 2026 at Jerry Long YMCA. Run solo or as a team, earn new medals, and support YMCA health programs for cancer survivors and people managing chronic disease.
Muddy Princess in Gaston SC is a women only 5k obstacle mud run at The Master's Motoplex on Sunday, Sept 13, 2026. Tackle muddy obstacles at your own pace, support the National Breast Cancer Foundation, and celebrate with fun finishes and festival vi..