May · Half Marathon
May Half Marathons 2026 & 2027
Find half marathons taking place in May. Compare race dates, locations, field size and registration information. Explore 151 half marathons with a confirmed date.
- Upcoming, date confirmed
- 151
- Active listings
- 155
- States
- 46
Nearby months
Upcoming may half marathons
All 151 with a confirmed date, soonest first.
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Festival Foods La Crosse Marathon & Grandad Half MarathonLa Crosse, WIMarathonHalf MarathonRelay5K ~2,500 runners
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Great Allegheny Ohiopyle Marathon Race Festival: Marathon, Half Marathon, 10K and 5KOhiopyle, PAMarathonHalf Marathon10K5K +1 more ~44 runners
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Seashore Classic Half Marathon, 2-Person Relay & 5KLewes, DEHalf Marathon2-Person Relay5K ~300 runners
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Chicagoland Spring Marathon, Half Marathon & 10KSchaumburg, ILMarathonHalf Marathon10K ~6,000 runners
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May the 4th be with You- The Empire Strides Back 5K, 10K, & Half Marathon by Califlow RunsLong Beach, CAHalf Marathon5K10K1 Mile +1 more
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Tacoma City Marathon / Half / Ghost / 10K / 5K / 1KTacoma, WAMarathonHalf Marathon10K5K +1 more ~2,000 runners
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Jump Off Rock Half Marathon, 10k & 5kHendersonville, NC10k presented by UNC Health PardeeHalf Marathon presented by Hunter SubaruIn-Person 5kVIRTUAL 10k +2 more
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Mercy Health Iron Mom Half-Marathon, Relay & 5KPaducah, KYHalf Marathon2 & 4 Person Relay5K ~1,000 runners
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P.A.C.E. Marathon & Half MarathonSmiths Grove, KYMarathonHalf Marathon5K (Puppy Pace) ~110 runners
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Race4Warriors 5K, 10K & Half Marathon ChallengesLewes, DEHalf Marathon10K5K (RunRace-Walk +1 more ~800 runners
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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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Long Beach Mother's Day Bloom & Zoom 5K, 10K, Half Marathon by Califlow RunsLong Beach, CAHalf Marathon5K10K1 Mile +1 more
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Mother's Day Run for the Roses: Half Marathon, 10K and 5KCoplay, PAHalf Marathon5K10K15K ~406 runners
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Windsor Half Marathon 10K & 5KWindsor, CAWindsor California 10k (6.2 Mile)Windsor California 5k (3.1 Mile)Windsor California Half Marathon 13.1M
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University Hospitals Cleveland MarathonCleveland, OH10K10K + Full Marathon - Challenge Series10K + Half Marathon - Challenge Series5K +1 more
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Venice Beach Half Marathon and 5kSanta Monica, CA10:15 a.m. Kids Grunion Run7:00 a.m. Half Marathon8:00 a.m. 5k Course8:30 a.m. One Mile Junior Dash (ages 10 - 18)
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Windermere Marathon, Half Marathon, 10K & 5KSpokane, WAMarathonHalf Marathon10K5K +1 more ~1,500 runners
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Gate City Marathon, Half Marathon & RelayNashua, NHMarathonHalf MarathonMarathon Relay ~300 runners
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Midwest Greater Kansas City Half Marathon, 10K & 5K (formerly Hy-Vee Series)Overland Park, KSHalf Marathon10K5KKids One-Mile ~1,500 runners
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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
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest May Half Marathons
By estimated field size across all distances at the event.
May Half Marathons by state
- California (15) 15 upcoming races
- Wisconsin (9) 9 upcoming races
- Kansas (8) 8 upcoming races
- Idaho (7) 7 upcoming races
- Washington (7) 7 upcoming races
- Utah (6) 6 upcoming races
- Massachusetts (5) 5 upcoming races
- Pennsylvania (5) 5 upcoming races
- Texas (5) 5 upcoming races
- Vermont (5) 4 upcoming races
- Colorado (4) 4 upcoming races
- Iowa (4) 4 upcoming races
- Kentucky (4) 4 upcoming races
- Nebraska (4) 4 upcoming races
- New York (4) 4 upcoming races
- Ohio (4) 4 upcoming races
Annual events awaiting their next date
These half marathons are held every year, but the next date isn't in the listing yet.
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Rock Reno Half MarathonReno, NV Usually held in May · next date not announcedHalf Marathon10K5K ~3,000 runners
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Middlebury Maple RunMiddlebury, VT Usually held in May · next date not announcedHalf Marathon3 Mile ~1,500 runners
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Whiskey Row MarathonPrescott, AZ Usually held in May · next date not announcedMarathonHalf Marathon10K5K +1 more ~1,500 runners
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Brookings MarathonBrookings, SD Usually held in May · next date not announcedMarathonHalfRelay ~600 runners
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.
May Half Marathons 2026 & 2027: common questions
- How many may half marathons are there?
- RaceRove currently lists 151 upcoming races with a confirmed date, plus 4 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).
Search every half 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.