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 Columbia
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Florida23
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Georgia7
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Hawaii1
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Idaho2
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Illinois7
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Indiana11
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Iowa2
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Kansas
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Kentucky4
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Louisiana
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Maine3
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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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Nevada3
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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 Carolina13
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North Dakota
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Ohio6
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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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Tennessee4
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Texas16
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Utah5
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Vermont7
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Virginia7
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Washington3
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West Virginia2
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Wisconsin1
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Wyoming
Obstacle Race Calendar United States 2025-2026
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 2025-2026! Our updated list features 200 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
May 2026
Challenge your fitness at the 2026 Denver DEKA FIT & Ultra on May 30 at Gaylord Rockies in Aurora, CO. Tackle a 5 km course with 10 fitness zones, or step up to the Ultra, with volunteer perks and service member discounts available.
Tackle a 3 mile urban obstacle course through downtown El Paso with shipping container climbs, cold plunges and team zones. Waves every 10 minutes, plus live DJs, food trucks, finisher medals and a big finish line celebration.
June 2026
Run the Tri State New York Spartan at Bethel Woods on June 6 and 7, 2026 across rolling hills and wooded trails, with Sprint, Super and kids races. On site camping and festival vendors make it a weekend outing.
Spartan obstacle racing returns to Perfect North Slopes near Cincinnati for a Trifecta Weekend on June 6 and 7, 2026, featuring steep climbs, mud, water and alpine terrain. Tackle Sprint, Super, Beast or Ultra distances for a scenic, rugged challenge..
Get muddy at Mud Factor on June 6 at Brookdale Farms in Eureka, Missouri a 5K obstacle run with adult and KIDZ family waves for runners of all ages. Celebrate post race in the festival area and snap pro photos available for purchase.
Join Goliathon XXIII on June 6, 2026 at Gloucester County Fairgrounds in Mullica Hill NJ for a family friendly 4 mile obstacle course with 12 tiered challenges. Choose easy, difficult or extreme tiers, race solo or form a team and compete for braggin..
Test your grit at Tough Mudder Michigan on June 13, 2026 in Oxford near Detroit, with 5K and 15K courses, Infinity laps and iconic obstacles like Ladder to Hell and Everest. Finishers earn medals, shirts and a celebratory drink.
Tackle over 30 rugged obstacles across a scenic 4.5 mile course at The Ultimate Ram OCR Challenge in Chattaroy WA. Competitive and open waves, medals for finishers, and proceeds benefit Riverside High School athletics.
Take on the Gaylord Gauntlet, a 5k trail and obstacle run across Gaylord Specialty Healthcare campus with 24 obstacles and a festival with live music and food. Proceeds fund adaptive sports for people with disabilities.
Get down and dirty at the Kansas City Muddy Dash on June 13, 2026 at Valley Speedway. Tackle a few miles of mud obstacles, enjoy a lively post race festival with food and music, and come in costume for fun over competition.
Take on a self paced 3 mile course with a dozen mud and water obstacles at the Reid Adventure Course. Finishers get a medal and tee and the event supports Reid Health athletic trainers for local schools.
Join the Muddy Dash in Atlanta for a fun, messy run through on course mud pits followed by a lively post race festival. Presented by Foam Daddy, it is perfect for racers and fans seeking muddy mayhem and big smiles.
Get muddy at the Hollis Adams Mud Run, a fun 5k with obstacles in Indianapolis on June 20, 2026. Family and dog friendly heats, team entries and an after party support Hollis Adams, a nonprofit for adults with developmental disabilities.
Tackle 15 muddy obstacles at the 14th annual Holiday Valley Mudslide in Ellicottville on June 20, 2026. Choose a 4.2 or 6.0 mile trail, get a timed result and finisher medal, and bring the family for kid friendly fun.
Get muddy at the Black Swamp Dash on June 20, 2026 in Oak Harbor Ohio, a 5k course with 20+ obstacles offering challenge or Xtreme routes. Competitive and noncompetitive entries welcome, all finishers receive a commemorative medal.
Push your limits at the Summer Spartan Death Race in Pittsfield Vermont June 26 to 28, 2026, a relentless 72 hour endurance event of obstacles, navigation and mental challenges. Teams can share start times and enjoy reduced entry.
Test your team in the 24 hour Vermont Hurricane Heat at Riverside Farm in Pittsfield on June 26 and 27 2026. In the birthplace of the Hurricane Heat, teams tackle 40 plus physical and mental challenges across rugged mountain farm terrain.
Tough Mudder Twin Cities returns June 27 and 28 at Wild Wings of Oneka in Hugo MN, with muddy wooded trails and adrenaline packed obstacle courses for every level. Choose 5K or 15K, earn a finisher medal and celebrate at the finish.