RACEROVE

September · Marathon

September Marathons 2026 & 2027

Find marathons taking place in September. Compare race dates, locations, course difficulty, field size and registration information. Explore 16 marathons with a confirmed date.

Search september marathons
Upcoming, date confirmed
16
Active listings
101
States
42

Nearby months

Upcoming september marathons

All 16 with a confirmed date, soonest first.

Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.

Filter these marathons in the interactive search

Largest September Marathons

By estimated field size across all distances at the event.

  • Boulder Marathon
    Boulder, CO Usually held in September · date not confirmed
    MarathonHalf ~15,000 runners
  • Boulderthon
    Boulder, CO Usually held in September · date not confirmed
    MarathonHalf Marathon10K5K +1 more ~15,000 runners
  • United States Air Force Marathon
    Dayton, OH Usually held in September · next date not announced
    MarathonHalf Marathon10K5K +1 more ~13,500 runners Flat courseBoston Qualifier
  • Akron Marathon
    Akron, OH Usually held in September · date not confirmed
    MarathonHalf ~8,000 runners Rolling courseBoston Qualifier
  • TBK Bank Quad Cities Marathon
    Moline, IA Usually held in September · date not confirmed
    MarathonHalf MarathonMarathon Relay5K ~6,000 runners
  • Fox Cities Marathon
    Menasha, WI Usually held in September · date not confirmed
    MarathonHalfRelay5K ~5,000 runners Rolling courseBoston Qualifier
  • Bellingham Bay Marathon
    WA Usually held in September · date not confirmed
    MarathonHalf10K5K ~3,000 runners Rolling courseBoston Qualifier
  • Mill Race Marathon
    Columbus, IN
    MarathonHalf Marathon5K ~3,000 runners Flat courseBoston Qualifier

September Marathons by state

Annual events awaiting their next date

These marathons are held every year, but the next date isn't in the listing yet.

  • Boulder Marathon
    Boulder, CO Usually held in September · date not confirmed
    MarathonHalf ~15,000 runners
  • Boulderthon
    Boulder, CO Usually held in September · date not confirmed
    MarathonHalf Marathon10K5K +1 more ~15,000 runners
  • United States Air Force Marathon
    Dayton, OH Usually held in September · next date not announced
    MarathonHalf Marathon10K5K +1 more ~13,500 runners Flat courseBoston Qualifier
  • Akron Marathon
    Akron, OH Usually held in September · date not confirmed
    MarathonHalf ~8,000 runners Rolling courseBoston Qualifier
  • TBK Bank Quad Cities Marathon
    Moline, IA Usually held in September · date not confirmed
    MarathonHalf MarathonMarathon Relay5K ~6,000 runners
  • Fox Cities Marathon
    Menasha, WI Usually held in September · date not confirmed
    MarathonHalfRelay5K ~5,000 runners Rolling courseBoston Qualifier
  • Bellingham Bay Marathon
    WA Usually held in September · date not confirmed
    MarathonHalf10K5K ~3,000 runners Rolling courseBoston Qualifier
  • Vancouver USA Marathon
    WA Usually held in September · date not confirmed
    MarathonHalf5K ~3,000 runners
  • Pikes Peak Marathon & Ascent
    Manitou Springs, CO Usually held in September · next date not announced
    MarathonAscent (13.3 mi) ~2,600 runners Hilly course
  • Bozeman Marathon
    Bozeman, MT Usually held in September · next date not announced
    MarathonHalf ~2,500 runners
  • Cytiva Top of Utah Marathon
    Logan, UT Usually held in September · date not confirmed
    MarathonHalf Marathon10K ~2,500 runners Flat courseBoston Qualifier
  • Erie Marathon
    Erie, PA Usually held in September · date not confirmed
    Marathon ~2,500 runners Flat courseBoston Qualifier
  • Grand Forks Marathon
    ND Usually held in September · date not confirmed
    MarathonHalf10K5K ~2,500 runners
  • IRONMAN Wisconsin
    Madison, WI Usually held in September · date not confirmed
    Full IRONMAN 140.6 (2.4-mi swim112-mi bike26.2-mi run) ~2,500 runners
  • Big Cottonwood Marathon
    Salt Lake City, UT Usually held in September · date not confirmed
    MarathonHalf5K ~1,500 runners
  • Montana Marathon
    Billings, MT Usually held in September · date not confirmed
    MarathonHalf ~1,200 runners Downhill courseBoston Qualifier
  • Morgantown Marathon
    Morgantown, WV Usually held in September · date not confirmed
    MarathonHalf8K ~1,200 runners
  • Heartland Marathon
    Omaha, NE Usually held in September · date not confirmed
    MarathonHalf ~1,000 runners
  • Kauai Marathon
    Koloa, HI Usually held in September · date not confirmed
    MarathonHalf ~1,000 runners Hilly course
  • Monument Marathon
    Gering, NE Usually held in September · date not confirmed
    MarathonHalf MarathonHalf Marathon Relay (3-person)5K ~1,000 runners Downhill courseBoston Qualifier
  • Omaha Marathon
    Omaha, NE Usually held in September · date not confirmed
    MarathonHalf5K ~1,000 runners Rolling courseBoston Qualifier
  • Pocatello Marathon
    Pocatello, ID Usually held in September · date not confirmed
    MarathonHalf ~900 runners Downhill courseBoston Qualifier
  • Clarence DeMar Marathon & Half Marathon
    Keene, NH Usually held in September · date not confirmed
    MarathonHalf Marathon ~850 runners Downhill courseBoston Qualifier
  • Ruidoso Marathon
    Ruidoso, NM Usually held in September · date not confirmed
    MarathonHalf ~800 runners
  • Jackson Hole Marathon
    Jackson, WY Usually held in September · date not confirmed
    MarathonHalf ~700 runners Rolling courseBoston Qualifier
  • Flagstaff Marathon
    Flagstaff, AZ Usually held in September · date not confirmed
    MarathonHalf Marathon10KKids Kilo ~600 runners Hilly course
  • Heart of the Valley Marathon
    Grand Forks, ND Usually held in September · date not confirmed
    MarathonHalf ~600 runners
  • Wabash Trace Running Festival (Marathon & Half)
    Shenandoah, IA Usually held in September · next date not announced
    MarathonHalf MarathonMarathon Relay10K +1 more ~600 runners Rolling courseBoston Qualifier
  • Beat the Blerch
    Carnation, WA Usually held in September · date not confirmed
    MarathonHalf Marathon10K5K ~500 runners Hilly course
  • Equinox Marathon and Relay
    Fairbanks, AK Usually held in September · date not confirmed
    MarathonHalf MarathonMarathon RelayMarathon Hike ~500 runners Hilly course
  • Tupelo Marathon & 14-Miler
    Tupelo, MS Usually held in September · date not confirmed
    Marathon14 Mile5K ~500 runners Rolling courseBoston Qualifier
  • Elk River Braxton County Monster Marathon/Half Marathon/5K
    Gassaway, WV Usually held in September · date not confirmed
    MarathonHalf Marathon5K Run/Walk ~300 runners
  • Heart of America Marathon
    Columbia, MO Usually held in September · next date not announced
    MarathonTeam Relay ~300 runners Hilly courseBoston Qualifier
  • Kenai River Marathon
    Kenai, AK Usually held in September · date not confirmed
    MarathonHalf MarathonRelay5K ~300 runners Rolling course
  • Lincoln Marathon, Half Marathon, 10K & 5K
    Lincoln, ME Usually held in September · date not confirmed
    MarathonHalf Marathon10K5K ~300 runners
  • Priest Lake Marathon
    Priest Lake, ID Usually held in September · next date not announced
    31.0686 Miles10K5KMarathon +1 more ~300 runners Hilly course
  • Roughrider Marathon
    Bismarck, ND Usually held in September · date not confirmed
    MarathonHalf ~300 runners
  • Santa Fe Marathon
    Santa Fe, NM Usually held in September · date not confirmed
    MarathonHalf ~300 runners
  • Cheyenne Marathon
    Cheyenne, WY Usually held in September · date not confirmed
    MarathonHalf5K ~250 runners
  • Hawk Hundred
    Lawrence, KS Usually held in September · date not confirmed
    100 Mile50 MileMarathon ~250 runners

Guides from the RaceRove blog

September Marathons 2026 & 2027: common questions

How many september marathons are there?
RaceRove currently lists 16 upcoming races with a confirmed date, plus 85 annual events whose next date hasn't been announced yet.
How long is a marathon?
A marathon is 26.2 miles (42.2 kilometres).

Search every marathon in September

Filter by state, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.

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