Michigan · Half Marathon
Half Marathons in Michigan
Michigan currently has 35 upcoming half marathons with a confirmed date listed in RaceRove. Grand Rapids, Lansing, Ann Arbor and Caledonia have the largest concentration of events.
September (11), October (5) and June (4) are the busiest months on the calendar right now. Another 17 annual half marathons are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 35
- Active listings
- 52
- Cities with races
- 40
More ways to browse Michigan
Upcoming half marathons in Michigan
All 35 with a confirmed date, soonest first.
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Rock CF Thumb Coast Marathon, Half Marathon & 5KPort Austin, MIMarathonHalf Marathon5K ~733 runners
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Black Toenail Friday Half Marathon and 7.5 Miler - MICommerce Township, MIHalf Marathon7.5 Miles ~688 runners
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Winter Trail Fest (WTF) Half Marathon and 5 Mile - WestsideMiddleville, MIHalf Marathon5 Mile ~991 runners
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Summer Trail Fest Ultra 50 Mile, 50K, Half Marathon, & 5 MilerLaingsburg, MIHalf Marathon50 Miler31 Miles5K +1 more
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Golden Harvest Half Marathon & 5k/10k - Ann ArborMilford, MIHalf Marathon50m1 Mile5K +1 more ~10 runners
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Golden Harvest Half Marathon & 5k/10k - LansingLansing, MIHalf Marathon50m1 Mile5K +1 more ~10 runners
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Trinity Health Probility Ann Arbor MarathonAnn Arbor, MIMarathonHalf Marathon10K5K +2 more ~3,000 runners
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest half marathon events in Michigan
By estimated field size across all distances at the event.
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Detroit Free Press MarathonDetroit, MI Usually held in October · next date not announcedMarathonHalf5K ~30,000 runners
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Crim Festival of RacesFlint, MI Usually held in August · next date not announced10KHalf Marathon ~11,000 runners
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Trinity Health Probility Ann Arbor MarathonAnn Arbor, MIMarathonHalf Marathon10K5K +2 more ~3,000 runners
When half marathons happen in Michigan
- February
- 2 upcoming races
- April
- 2 upcoming races
- May
- 2 upcoming races
- June
- 4 upcoming races
- July
- 3 upcoming races
- August
- 3 upcoming races
- September
- 11 upcoming races
- October
- 5 upcoming races
- November
- 2 upcoming races
- December
- 1 upcoming race
Michigan cities with the most half marathons
- Grand Rapids
- 3 upcoming races
- Lansing
- 2 upcoming races
- Ann Arbor
- 2 upcoming races
- Caledonia
- 2 upcoming races
- Marquette
- 2 upcoming races
- Holland
- 1 upcoming race
- Detroit
- 1 upcoming race
- Brighton
- 1 upcoming race
Annual events awaiting their next date
These half marathons are held every year, but the next date isn't in the listing yet. The month shown is when each is usually held.
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Detroit Free Press MarathonDetroit, MI Usually held in October · next date not announcedMarathonHalf5K ~30,000 runners
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Crim Festival of RacesFlint, MI Usually held in August · next date not announced10KHalf Marathon ~11,000 runners
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Sleeping Bear MarathonEmpire, MI Usually held in October · next date not announcedMarathonHalf ~800 runners
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Mackinac Island Great Turtle Half Marathon & 5.7 MileMackinac Island, MI Usually held in October · next date not announcedHalf Marathon5.7 Miles ~705 runners
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Run Iron Mountain Half Marathon | 1OK | 5K | 1 Mile Fun RunIron Mountain, MI Usually held in September · next date not announcedHalf Marathon5K10K1 Mile ~568 runners
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Riley Trails 13.1, 10K & Ruck ChallengeHolland, MI Usually held in August · next date not announced1/2 Marathon13.1 RUCK10K10K RUCK ~80 runners
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Spooky Sprint- LansingLansing, MI Usually held in October · next date not announced1 Mile5K10KHalf Marathon ~15 runners
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"Bridge to Brew" Half Marathon and 5KPort Huron, MI Usually held in August · next date not announcedHalf Marathon5K
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Bay to Beacon - Half Marathon, 10K, & 5KHarrisville, MI Usually held in August · next date not announcedHalf Marathon5K1 Mile
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BRB - Back Roads Bound Half MarathonWhite Lake, MI Usually held in August · next date not announcedHalf Marathon5K10K
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Gentex Park2Park 1/2 Marathon & 5K for Neighbors PlusHolland, MI Usually held in September · next date not announcedHalf Marathon5K
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Halloween HustleFlint, MI Usually held in October · next date not announced5K Competitive Walk5k Non-Competitive Walk5k RunCrim Half Marathon Training +2 more
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Heritage 50k & Half-MarathonAdrian, MI Usually held in October · next date not announcedHalf Marathon31.1 Miles5K
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Hot Cider Hustle - Lansing Half Marathon, 10K & 5KLansing, MI Usually held in October · next date not announcedHalf Marathon10K5K
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Run Branch County 5k & Half MarathonColdwater, MI Usually held in September · next date not announcedHalf Marathon5K50 Yards
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Sandhill Crane All Trail Half Marathon/10K/5KVandalia, MI Usually held in October · next date not announcedHalf Marathon10K5K1K
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Will Run for Donuts Half Marathon, 5k + 1 MileWestland, MI Usually held in August · next date not announcedHalf Marathon5K1 Mile
Half Marathons in nearby states
Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Half Marathons in Michigan: common questions
- How many half marathons are there in Michigan?
- RaceRove currently lists 35 upcoming half marathons in Michigan with a confirmed date, plus 17 annual events whose next date hasn't been announced yet.
- How long is a half marathon?
- A half marathon is 13.1 miles (21.1 kilometres).
- Which Michigan cities have the most half marathons?
- By upcoming events listed in RaceRove: Grand Rapids (3), Lansing (2), Ann Arbor (2), Caledonia (2) and Marquette (2).
- When is half marathon season in Michigan?
- Of the upcoming half marathons listed, the busiest months are September (11), October (5) and June (4).
- What is the biggest half marathon in Michigan?
- By estimated field size, the largest event with a half marathon listed in Michigan is the Detroit Free Press Marathon, with about 30,000 runners across all of its distances.
Search every half marathon in Michigan
Filter by month, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.