Woldumar Trail Run

Lansing, United States • 1 Nov 2026

Woldumar Trail Run

The Woldumar Trail Run takes place at Woldumar Nature Center in Lansing, Michigan, on November 1, 2026. The event is presented by Lake Trust Credit Union, and the shorter Muskrat Mile is presented by Delta Dental. The event supports the Woldumar Nature Association’s work in outdoor science education and land protection; the association engages over 7,000 students in outdoor education each year.

The venue encompasses prairie, pine forest, wetlands, and hardwood forest along the Grand River on more than 180 acres protected by the association. The course uses varied natural running surfaces with no pavement. Pets are not allowed on the course during the in-person event. Participants may walk with strollers but should expect rugged terrain. Refreshments are provided after the race and children’s activities are offered during and after the 5K event.

Registration and fees follow published pricing tiers. Long-sleeve shirts are included with registration; additional shirts may be purchased at the event while supplies last, and desired sizes are not guaranteed after October 16, 2026. Donations and proceeds from the 5K support environmental education and land protection, with donation options that can reduce or cover entry fees.

Awards include hand-made natural wood plaques for overall first place across genders, custom finisher medallions for all participants, and 1st through 3rd place in each age group. Visit the organization's website for the most recent information.

  • 5K run/walk
  • 1 mile Muskrat Mile fun run (free registration)

Race information

5 km
Woldumar 5k Trail Run
Delta Dental Muskrat Mile
Visit the organization's website for the most recent information.
Trail runs nearby

A 2.25 mile loop through Harris Nature Center and Eastgate Park in Okemos on June 3, 2026, with a post-event gathering and refreshments. Registration fees support the Harris Nature Center Foundation and a Hawk's Nest project.

Summer Trail Fest Ultra on June 13, 2026 at Sleepy Hollow State Park offers distances from 5 miles to 50 miles with run, ruck, virtual and economy options. The course is mostly well groomed singletrack with stocked aid stations and a post r..

Timed 10K and 5K races on the Lansing River Trail on June 27, 2026, plus a kids 5K for ages 12 and under. The event features professional timing, age group awards, and proceeds that support local trail stewardship.

A 5k fitness race in Owosso that alternates running segments with functional fitness tests, offered in a prescribed competitive division and a flexible Good Time division. Heats are small and awards and event tanks are provided.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.