Idaho Mud Run & Obstacle Race Calendar 2025-2026

If you're an adrenaline junkie, fitness enthusiast, or simply seeking a thrilling outdoor adventure, you've arrived at the perfect destination. Our meticulously curated calendar is your gateway to the most exhilarating and challenging mud runs and obstacle races taking place in 2025 and 2026.

Prepare to conquer mud-slicked trails, scale towering walls, navigate through grueling obstacles, and push your physical and mental boundaries. Our mission is to provide you with all the essential information you need to plan your race year, including dates, locations, race details, and registration information.

Farm Life 5k Trail Run

Idaho Falls • 2 Aug 2025

5k Fun Run

The Farm Life 5k Trail Run is a fun and engaging event taking place at the Bonneville County Fair in Idaho Falls. Participants will enjoy a scenic course that winds through corrals, horse barns, and fields. The event features a 5k Fun Run and a free Grit League Obstacle Course for kids.

All finishers will receive an award, and there will be multiple water stations along the route. Early registration is available at a discounted price, and all participants will receive a coupon for a free breakfast at the Fair. A portion of the entry fees will support the Bonneville County Fairboard's 4H Program. Visit the organization's website for the most recent information.

Boise Spartan Trifecta Weekend

Payette • 9-10 Aug 2025

Kids Race 1-3km Sprint 5k ... Beast 21k Hurricane Heat 4hr

The Boise Spartan Trifecta Weekend, held at Tom Pence Ranch in Payette, Idaho, offers a challenging obstacle course racing experience across multiple distances. Participants can choose from the Sprint (5K with 20 obstacles), Super (10K with 25 obstacles), and Beast (21K with 30 obstacles) races, with options for kids and a 4-hour Hurricane Heat endurance event. This event emphasizes teamwork, with team registration allowing friends to start together and save on entry fees. Set against the rugged terrain of the Snake River Plain, the weekend promises a tough, transformative test of mind and body for all fitness levels. Visit the organization's website for the most recent information.

LC Valley Down and Dirty Mud Run

Lewiston • 23 Aug 2025

1 Mi 3.2 Mi

The LC Valley Down and Dirty Mud Run, held in Lewiston, Idaho, is a fun and muddy event combining cross country running with obstacle course challenges. Open to men, women, and children of all ages and fitness levels, the event offers distances of 1 mile and 3.2 miles. Participants can choose to race competitively or take a more relaxed approach, enjoying the muddy course with friends. The atmosphere is family-friendly and inclusive, encouraging everyone to get dirty and have fun. The event also features a Mini-Mudder category for children 10 and under, making it a great community activity for all ages. Visit the organization's website for the most recent information.