United States
- Alabama 2
- Alaska 1
- Arizona 2
- Arkansas 1
- California 20
- Colorado 7
- Connecticut 1
- Delaware
- District of Columbia
- Florida 13
- Georgia 7
- Hawaii 3
- Idaho 4
- Illinois 10
- Indiana 9
- Iowa 3
- Kansas 1
- Kentucky 5
- Louisiana
- Maine 4
- Maryland 1
- Massachusetts 4
- Michigan 10
- Minnesota 3
- Mississippi 1
- Missouri 3
- Montana 1
- Nebraska
- Nevada 1
- New Hampshire 3
- New Jersey 6
- New Mexico
- New York 10
- North Carolina 14
- North Dakota
- Ohio 12
- Oklahoma 3
- Oregon 6
- Pennsylvania 8
- Puerto Rico
- Rhode Island 2
- South Carolina 6
- South Dakota
- Tennessee 4
- Texas 16
- Utah 5
- Vermont 4
- Virginia 9
- Washington 6
- West Virginia 2
- Wisconsin 3
- 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 235 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
A Spartan Trifecta weekend at Dillingham Ranch on Oahu's North Shore featuring Sprint, Super, Beast, Ultra and kids races across coastal trails, ridgelines and fields. Teams can lock shared start times and service members may receive up to 25% off.
A Scottish Highlander themed obstacle race in Pingree Grove, Illinois featuring 3K family, 5K and 15K heats with 20 to 30 obstacles, plus a torch lit night race and a haunted 5K. Spectator fee on-site is $10 and parking is free.
An obstacle and mud focused 5K at Village Creek Motocross Park in Dallas Fort Worth on August 15, 2026, featuring mud pits, walls, ropes, monkey bars and a finish festival. Value and VIP registration tiers include medals, photos and VIP extras.
Experience a fun 5K obstacle course filled with mud pits and slides at DREAM Park. Enjoy a pre-race DJ sets and a lively after-party with food and music in a family-friendly atmosphere.
Hill of a Race 2026 in Bloomington, IL combines a lap based Endurance Challenge with multiple 3 mile obstacle course waves, including competitive men, women, masters and several recreational waves.
A 3.1 miles obstacle course through Thomas Jefferson’s Poplar Forest with elite, team, corporate and non-competitive waves. Entry fees support Poplar Forest education and elite competitors must complete all obstacles to qualify for prizes.
Summit Grays and Torreys Peaks in this 8.8 mile Colorado endurance event. Participants must carry a 20lb dry load while tackling 4,101 feet of elevation gain.
Muddy Princess Kentucky is a 5K obstacle mud run in Glencoe on August 16, 2026, offering standard, VIP and volunteer options and supporting the National Breast Cancer Foundation with on site photos, hydration points and a rinse off station.
A 5k mud run in Oak Harbor, Ohio with 20+ obstacles and two difficulty lines on many obstacles. Registration includes a T-shirt, wristband, and medal, and 10% of proceeds will go to Ronald McDonald House Charities.
A 5k that alternates running segments with functional fitness stations in Owosso, Michigan. Two divisions offer either set competitive standards or adjustable weights and modifications, and the 2026 format lists a specific sequence of runs and fitnes..
A 5K obstacle mud run at North Carolina Motorsports Park on August 23, 2026, Muddy Princess offers Standard, VIP, and Volunteer options and supports the National Breast Cancer Foundation with on-course mud obstacles and finishers items.
A Spartan obstacle weekend at Mahon Ranch near Elk Grove features a Sprint 5 km with 20 obstacles, a Super 10 km with 25 obstacles and kids races, plus team entries, volunteer options and service member discounts.
Tough Mudder Chicago on August 29, 2026 at Richardson Adventure Farm features 5K and 15K obstacle runs, an 8-hour Infinity lap format, Mudder Village festival amenities, and finisher medals, shirts, headbands and drinks.
A weekend of obstacle races at Summit Bechtel Reserve on Aug 29–30, 2026 featuring Sprint, Super, Beast, a kids race, and a pre-race obstacle workshop across hilly, water‑featured terrain.
A 3 mile obstacle run at Phil Moore Park on August 29, 2026 raising funds for child abuse prevention. Individual and team entries are offered plus a free Kids Mud Bath for children under nine.
A family-friendly 5K mud run on August 29, 2026 at Budds Creek Motocross Park featuring obstacles, mud pits, a pre event warm up, and an after party with music and food. Value and VIP registration options are available.
A muddy mix of cross country running and obstacles in Lewiston on August 29, 2026. The event can be run competitively or enjoyed as a casual mud run and includes a Mini-Mudder for children 10 and under.
Spartan Stadion Philadelphia on August 29, 2026 uses an urban stadium course in South Philly with steep stairs, narrow concourses and 20 obstacles over 5 km. Kids races and spectator tickets are available.
River Rat Obstacle 5K and 1 Mile Fun Run raises funds for the Lexington Cross Country team at Lexington High School. Courses are mostly grass and trails and include optional obstacles such as hay bale hurdles, a tire maze and a slip n' slide finish.
Muddy Princess Charlotte is a 5K obstacle mud run at Porter Farms in Concord, NC on August 30, 2026. The event features mud obstacles, finisher medals and event photos, offers Standard, VIP and Volunteer ticket types, and supports the National Breast..