McKirdy Micro Marathon: Breaking 4
October 12, 2025
Millennium Park, Walker, MI
(just southwest of Grand Rapids, MI)
The average finish time (globally) for a marathon is 4 hours 32 minutes. This October 12, 2025, we aim to lower that global average by helping as many athletes as possible break the 4 hour barrier!
To help the athletes accomplish this task we are set to offer total "in-race support." Dedicated pacers, nutritional guidelines, pre-race meetings, and many more aspects that large scale races can't offer to ensure our participants have the best experience possible as well as the best chance for success!
On race day, you'll be ready!
Elite Perks for All Athletes
Personal bottles every 4 miles = fuel that works for you.
No juggling cups, no overstuffed pockets—just your exact nutrition, exactly when you need it.
Dialed-in pacers. No surging, no stress.
Just steady, goal-pace support so you can run with confidence. Stare at the scenery around you, not your watch.
A spectator-friendly course means more than just cheers.
Your crew can see you again and again—no long waits, no missed moments.
More high-fives. More energy. More love, right when you need it most.
Run the shortest path to your goal.
Our marked tangent line ensures you cover exactly 26.2 miles—not 26.4.
Because at 4-hour pace, every extra 1/4 mile adds 2+ minutes to your finish time.
Built for breakthroughs.
Our fast, certified course is designed to help you stay smooth, steady, and focused—so you can run your best without huge hills, sharp turns, or slowdowns.
Every finisher earns a medal. Every sub-4 earns more.
We’re celebrating the breakthrough with a $10,000 shared prize purse for all runners who finish under 4 hours.
Because chasing your goal deserves recognition—and reward.
Race Location
1415 Maynard Ave SW
Walker, MI 49534 US
View Location on Map
Travel
Airports
Gerald R Ford International Airport (GRR)
18 miles from Millennium Park
Detroit Metropolitan Wayne County Airport (DTW)
Course
The start/finish is at the Meadows Pavilion in Millennium Park. The course consists of 6- 4.05 mile loops, plus an approximately 1 mile long "tail" at the start and the end. Each loop has approximately 70feet of elevation gain.
The course is USATF certified (MI18031MN). The course was first measured by Don Kern - Aug 10, 2018.
If you run a Boston qualifying time on the course, it is valid and can be used to register for the Boston Marathon.
Parking, Bathrooms, & Gear Check
Parking
There is plenty of free parking near the start. Please park in the "The Meadows at Millennium Park" parking area near Grant Pavilion. Parking map will be distributed to participants prior to race weekend.
Bathrooms
There will be 8 portable toilets near the Start/Finish area at Grant Pavilion, and 2 portable toilets near the aid station on the main loop. Runners will pass the aid station 6 times during the race. The permanent restroom facilities in the park are not guaranteed to be open on race morning, so please plan accordingly.
Gear Check
There will be no gear check for the race. Anything left behind in the staging area at the start will be disposed of. Please leave all valuables in the car!
Deferrals & Refunds
No deferrals or refunds are allowed.
Contact Us
If you have any questions about the race, send us a message:
