Maine · Half Marathon
Half Marathons in Maine
Maine currently has 18 upcoming half marathons with a confirmed date listed in RaceRove. Portland, Bar Harbor, Lincoln and Augusta have the largest concentration of events.
June (5), September (4) and October (3) are the busiest months on the calendar right now. Another 6 annual half marathons are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 18
- Active listings
- 24
- Cities with races
- 19
More ways to browse Maine
Upcoming half marathons in Maine
All 18 with a confirmed date, soonest first.
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Mousam Lake Sanford Marathon, Half Marathon, 10K & 5KSanford, MEMarathonHalf Marathon10K5K ~400 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 Maine
By estimated field size across all distances at the event.
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Mount Desert Island Marathon, Half & RelayBar Harbor, ME Usually held in October · next date not announcedMarathonHalf MarathonRelay ~1,800 runners
When half marathons happen in Maine
- April
- 1 upcoming race
- May
- 2 upcoming races
- June
- 5 upcoming races
- July
- 1 upcoming race
- September
- 4 upcoming races
- October
- 3 upcoming races
- November
- 1 upcoming race
- December
- 1 upcoming race
Maine cities with the most half marathons
- Portland
- 3 upcoming races
- Bar Harbor
- 2 upcoming races
- Lincoln
- 2 upcoming races
- Augusta
- 1 upcoming race
- Baileyville
- 1 upcoming race
- Bangor
- 1 upcoming race
- Bath
- 1 upcoming race
- Belfast
- 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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Mount Desert Island Marathon, Half & RelayBar Harbor, ME Usually held in October · next date not announcedMarathonHalf MarathonRelay ~1,800 runners
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ACT Trail FestArundel, ME Usually held in September · next date not announced1/2 Marathon10K Walk/Run Race5K Walk/Run RaceKid's Bike Race
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Autumn & Ales 5K, 10K, and 1/2 MarathonScarborough, ME Usually held in September · next date not announcedHalf Marathon5K10K
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Bradbury Badass RacesPownal, ME Usually held in September · next date not announcedPounderHalf-Pint
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The Waldoboro Half MarathonWaldoboro, ME Usually held in September · next date not announcedHalf Marathon5K
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 Maine: common questions
- How many half marathons are there in Maine?
- RaceRove currently lists 18 upcoming half marathons in Maine with a confirmed date, plus 6 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 Maine cities have the most half marathons?
- By upcoming events listed in RaceRove: Portland (3), Bar Harbor (2), Lincoln (2), Augusta (1) and Baileyville (1).
- When is half marathon season in Maine?
- Of the upcoming half marathons listed, the busiest months are June (5), September (4) and October (3).
- What is the biggest half marathon in Maine?
- By estimated field size, the largest event with a half marathon listed in Maine is the Shipyard Old Port Half Marathon & 5K, with about 5,000 runners across all of its distances.
Search every half marathon in Maine
Filter by month, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.