May · Marathon
May Marathons 2026 & 2027
Find marathons taking place in May. Compare race dates, locations, course difficulty, field size and registration information. Explore 60 marathons with a confirmed date.
- Upcoming, date confirmed
- 60
- Active listings
- 63
- States
- 31
Nearby months
Upcoming may marathons
All 60 with a confirmed date, soonest first.
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Festival Foods La Crosse Marathon & Grandad Half MarathonLa Crosse, WIMarathonHalf MarathonRelay5K ~2,500 runners Downhill courseBoston Qualifier
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Great Allegheny Ohiopyle Marathon Race Festival: Marathon, Half Marathon, 10K and 5KOhiopyle, PAMarathonHalf Marathon10K5K +1 more ~44 runners Rolling courseBoston Qualifier
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Avenue of the Giants MarathonArcata, CAMarathonHalf Marathon10K ~14,500 runners Rolling courseBoston Qualifier
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Chicagoland Spring Marathon, Half Marathon & 10KSchaumburg, ILMarathonHalf Marathon10K ~6,000 runners Rolling courseBoston Qualifier
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Cincinnati Flying Pig MarathonCincinnati, OHMarathonHalf ~40,000 runners Hilly courseBoston Qualifier
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Colorado MarathonFort Collins, COMarathonHalf Marathon10K5K ~3,500 runners Downhill courseBoston Qualifier
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Eau Claire MarathonEau Claire, WIMarathonHalf Marathon10K5K +2 more ~5,000 runners Rolling courseBoston Qualifier
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Hoag OC Marathon Running FestivalCosta Mesa, CAMarathonHalf5KCombos ~25,000 runners Flat courseBoston Qualifier
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Maine Coast Marathon, Half Marathon & 5KWells, MEMarathonHalf Marathon5K ~4,000 runners Flat courseBoston Qualifier
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Providence MarathonEast Providence, RIMarathonHalf5K ~2,500 runners Rolling courseBoston Qualifier
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Tacoma City Marathon / Half / Ghost / 10K / 5K / 1KTacoma, WAMarathonHalf Marathon10K5K +1 more ~2,000 runners Hilly courseBoston Qualifier
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York Marathon and Half MarathonYork, PAMarathonHalf Marathon ~7,425 runners Flat courseBoston Qualifier
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P.A.C.E. Marathon & Half MarathonSmiths Grove, KYMarathonHalf Marathon5K (Puppy Pace) ~110 runners Rolling course
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Scenic City Trail RaceRed Bank, TNTrail Marathon and Trail Half Marathon (looped course~6.65 mi laps); also shorter options ~400 runners
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Born to Run Ultra MarathonsLos Olivos, CAMarathonDay Pass One DayDay Pass Two DayDay Pass Four Day +2 more ~300 runners
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New River Marathon, Half Marathon & 5KTodd, NCMarathonHalf Marathon10K5K ~297 runners Hilly courseBoston Qualifier
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YMCA Famous Idaho Potato Marathon & Fun RunsBoise, IDMarathonHalf Marathon10K5K ~3,000 runners Flat courseBoston Qualifier
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Capital City MarathonOlympia, WAMarathonHalf MarathonFive MileKids' Run ~1,500 runners Rolling courseBoston Qualifier
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Denver Colfax MarathonDenver, COMarathonHalfUrban 10 MilerMarathon Relay +1 more ~25,000 runners Rolling courseBoston Qualifier
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EPIC Marathon and Running FestivalGreen Bay, WIMarathonHalf Marathon5KKids Dash ~558 runners Flat courseBoston Qualifier
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Sugarloaf Marathon & 15KCarrabassett Valley, MEMarathon15K ~1,500 runners Downhill courseBoston Qualifier
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University Hospitals Cleveland MarathonCleveland, OH10K10K + Full Marathon - Challenge Series10K + Half Marathon - Challenge Series5K +1 more Boston Qualifier
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Windermere Marathon, Half Marathon, 10K & 5KSpokane, WAMarathonHalf Marathon10K5K +1 more ~1,500 runners Flat courseBoston Qualifier
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Gate City Marathon, Half Marathon & RelayNashua, NHMarathonHalf MarathonMarathon Relay ~300 runners
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Whitefish Marathon, Half Marathon & 5KWhitefish, MTMarathonHalf Marathon5K ~1,600 runners Hilly courseBoston Qualifier
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Austin's Backyard Ultra • Marathon • Full • Half & Memorial Day Remembrance Run 4 Miler • 8 MilerMarble Falls, TXMarathonHalf Marathon4.167 Miles10K +3 more ~330 runners
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Bayshore MarathonTraverse City, MIMarathonHalf Marathon10KKids Fun Run ~7,500 runners Flat courseBoston Qualifier
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Buffalo Marathon WeekendBuffalo, NYMarathonHalf Marathon5K1K +1 more ~1,209 runners Flat courseBoston Qualifier
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Coeur d'Alene MarathonCoeur d'Alene, IDMarathonHalf Marathon10K5K ~2,000 runners Rolling courseBoston Qualifier
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest May Marathons
By estimated field size across all distances at the event.
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Cincinnati Flying Pig MarathonCincinnati, OHMarathonHalf ~40,000 runners Hilly courseBoston Qualifier
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Denver Colfax MarathonDenver, COMarathonHalfUrban 10 MilerMarathon Relay +1 more ~25,000 runners Rolling courseBoston Qualifier
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Hoag OC Marathon Running FestivalCosta Mesa, CAMarathonHalf5KCombos ~25,000 runners Flat courseBoston Qualifier
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Avenue of the Giants MarathonArcata, CAMarathonHalf Marathon10K ~14,500 runners Rolling courseBoston Qualifier
May Marathons by state
- California (7) 7 upcoming races
- Idaho (4) 4 upcoming races
- Ohio (4) 4 upcoming races
- Washington (4) 4 upcoming races
- Wisconsin (4) 4 upcoming races
- Colorado (3) 3 upcoming races
- Illinois (3) 3 upcoming races
- Minnesota (3) 3 upcoming races
- Pennsylvania (3) 3 upcoming races
- Kansas (2) 2 upcoming races
- Maine (2) 2 upcoming races
- New Hampshire (2) 2 upcoming races
- New York (2) 2 upcoming races
- Utah (2) 2 upcoming races
- Vermont (2) 2 upcoming races
- Alabama (1) 1 upcoming race
Annual events awaiting their next date
These marathons are held every year, but the next date isn't in the listing yet.
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Cape Cod MarathonFalmouth, MA Usually held in May · next date not announcedMarathon ~1,500 runners Flat courseBoston Qualifier
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Whiskey Row MarathonPrescott, AZ Usually held in May · next date not announcedMarathonHalf Marathon10K5K +1 more ~1,500 runners Hilly course
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Brookings MarathonBrookings, SD Usually held in May · next date not announcedMarathonHalfRelay ~600 runners Flat courseBoston Qualifier
Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 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.
- 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.
May Marathons 2026 & 2027: common questions
- How many may marathons are there?
- RaceRove currently lists 60 upcoming races with a confirmed date, plus 3 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 May
Filter by state, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.