14th Annual Mudder's Day Madness Mud Run 5K & Fun Run 2026
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About the Race
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 ...
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History & past results
Past finisher times and year-over-year participation will appear here once the organizer publishes them.
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Common questions
How hard is the 14th Annual Mudder's Day Madness Mud Run 5K & Fun Run 2026 5K?
We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.
What should I wear?
Dress for ~10°F warmer than the standing temperature once you start running. Throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, singlet plus visor when it climbs above 60°F. The race-day forecast above is the source of truth closer to the date.
When does it sell out?
No published deadline. Most races raise the entry fee in tiers and can sell out without warning — sign up early if you're committed.
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