Early Registration Open for Mudder's Day Madness

Annual 5K obstacle course event returns to Montvale Springs on May 9, 2026.

Published on Feb. 18, 2026

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The 14th Annual Mudder's Day Madness, a popular 5K obstacle course event, is set to return to Montvale Springs in Maryville, Tennessee on May 9, 2026. Early bird registration is now open through February 28th, offering discounted pricing for runners who sign up early.

Why it matters

Mudder's Day Madness is a major fundraising event for Harmony Family Center, a local nonprofit that provides therapeutic programming and support for foster and adoptive children and families in the area. The event helps raise critical funds for the organization's equine therapy and camp initiatives.

The details

The Mudder's Day Madness course features over 20 obstacles, rolling trails, and even a dip in the lake, promising a muddy and challenging experience for participants. In addition to the main 5K event, there will also be a shorter Fun Run course for younger runners.

  • Early bird registration is open through February 28, 2026.
  • The 14th Annual Mudder's Day Madness event will take place on May 9, 2026.

The players

Harmony Family Center

A local nonprofit organization that provides therapeutic programming and support for foster and adoptive children and families in the Maryville, Tennessee area.

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What’s next

Runners interested in participating in the 14th Annual Mudder's Day Madness can sign up for the early bird registration through the event's website at https://runsignup.com/Race/TN/Maryville/MuddersDayMadness5k.

The takeaway

Mudder's Day Madness is a beloved annual event that brings the community together to support Harmony Family Center's important work with foster and adoptive families. The obstacle course challenge promises a fun and muddy experience for runners of all ages.