
From the Organizer
We’ve all heard of Punxsutawney Phil, the little furry guy in Pennsylvania who comes out, sees his shadow, and declares six more weeks of winter. Then there’s Augustus T. Groundhog, better known as Grand Rapids Gus. He’s Phil’s much more interesting cousin. Unlike Phil, who it seems can only see shadows, Gus has much better eyesight and can look at a calendar on February 2 and know that spring doesn’t start for six weeks. Gus suggested that instead of lamenting over six more weeks of winter, we should EMBRACE the cold and snow and do something fun. And so, the Groundhog Day Marathon was born.
The modified course for 2024 was pretty popular. We've certified the new course, so we'll be starting behind the pavilion this year again. Looking forward to seeing you in 2027!
EARLY START--If you're planning to be running more than about 6 hours, please start at the 7:00 am early start. The normal start is at 8:00 am
The Basics
It’s a winter running event, outside Grand Rapids Michigan. YES! THERE WILL PROBABLY BE LOTS OF SNOW ON THE COURSE.
The Friday and Saturday beginning of February. In 2027, it's February 5-6.
It’s more fun than you should have with your clothes on. (And we DEFINITELY suggest you keep your clothes on!)
Our Events
Friday - Moonlight 1/6 Marathon on Groundhog Eve: WORLD CHAMPIONSHIP 1/6 MARATHON! Hey, we’re going to be set up anyway, no sense in just long-distance people having all the fun. Two loops of the course. 6:30 p.m. Friday. 300 Runner limit.
Saturday - Marathon: Like the movie, you’ll feel like you’re repeating the same day over and over. A beautiful, snowy (we hope), approximately 2.2 mile course. Splits every 1/12th of a marathon. 8:00 a.m. Saturday. 500 Runner limit combined for full and half marathons
Saturday - Half Marathon: For those of you who couldn’t stay awake through the whole movie. Only six times around.
Course
Ever see the movie? The course will give you the opportunity to relive the same day several times. A total of 12 loops of approximately 2.18 miles on a CERTIFIED course (Yes! You can qualify for Boston!) will have you feeling just a little case of deja vu. Aid stations at 1 mile plus the finish line area. Don’t plan on the course being free of snow. It’s paved, which means no underlying rocks and roots, but that’s about all we’re promising.
Swag - Every participant will get an awesome hoodie, finisher medal. Whole and Half-Hog get a stocking cap as well.
Training Partner - And our Official Training Program for Groundhog
RunGR is our largest local running club and has multiple coaches, who provide training programs for all of our races. With a club of more than 300 runners, the club provides a great opportunity to not only get a coaching plan, but also do your training with a large group of local athletes. RunGR will be offering a training plan, specific to Groundhog distances, as well as a prorated membership, known as their FAST program, so you can try out the club for 20 weeks. https://rungr.com/
For our Official Training Program, CLICK
Hotels & Travel.
Our airport is GRR. Look for hotels HERE
Contacts:
(Note--if you write with a question that's very plainly stated on the page, the email may get a low priority)
Race Director: Don Kern donkern1@gmail.com 616 293 3145
Volunteer Coordinator: Stephanie Cornwell, happy.steph.1976@gmail.com
Mailing Address: 1170 Oakburn Ave SE Grand Rapids, MI 49546
Events
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Groundhog Day Marathon, put it on the calendar, and turn “someday” into a start date.
242
Days to train
Coming Up
Flushing Evening Road Race
The Chocolate Milk Mile 2026 (WORLD RECORD EVENT)
EUP Relay For Life 5K
Ludington Lakestride Half Marathon 10K and 5k
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
Groundhog Day Marathon
Feb 5, 2027