14th Annual Mudder’s Day Madness Mud Run 5K & Fun Run 2026 – Maryville, TN 2026

Keeping with tradition, Harmony's 14th annual Mudder's Day Madness Mud Run is the Saturday before Mother’s Day, May 9th, 2026. During our traditional 5K, the course spans across Montvale’s muddiest trails with 20 obstacles. From Adversity Hill to the Tire Traverse to the A-Frame Climb, runners from ages 8 and up can race on their own or with a team. Costumes are encouraged and celebrated! In addition to our 5K, we also have a family friendly, untimed Fun Run for anyone ages 4 and up! The Fun Run distance is about 1.2 miles and will include trail running, field running, obstacles, and mud, of course! Early bird pricing ends after February 28th, so register today! Medals will be presented for fastest 3 male & 3 female 18+ overall, and for the fastest 3 male & 3 female 17 and under overall only. Trophies will be awarded to the largest team, best team costumes, and fastest team! All participants will get swag and a participation pin! Vendors, food trucks, refreshments, and music will be on