Maine · Marathon · Half Marathon · Relay
Mount Desert Island Marathon, Half & Relay
Mount Desert Island Marathon, Half & Relay is a marathon, half marathon and Relay event held in Bar Harbor, Maine. It was last held on October 18, 2026 and is usually run in October; the next date hasn't been announced yet. About 1,800 runners take part across all distances.
- Usually held
- October
- Location
- Bar Harbor, ME
- Field size
- ~1,800 runners
Race details
- Last held
- October 18, 2026
- Usually held in
- October
- Location
- Bar Harbor, Maine
- Distances
- Marathon, Half Marathon, Relay
- Field size
- About 1,800 runners
- Course
- Hilly, challenging (~1,000+ ft gain)
- Registration
- reg.runmdi.org
- Official website
- runmdi.org
Registration, course & weather
- Registration status
- Registration status as last checked October 5, 2026: sold out
- Start time
- 8:00 AM EDT
- Course profile — Marathon
- Point-to-point course; Road surface; USATF certified; Boston qualifier
- Course profile — Marathon
- Point-to-point course; Road surface; Boston qualifier
About the Mount Desert Island Marathon, Half & Relay
A spectacular but demanding point-to-point race from Bar Harbor through the villages of Mount Desert Island alongside Acadia National Park. Offers a full, half, and relay.
Rankings and notes
- Rankings and awards
- USATF-certified; widely cited as one of the most scenic (and toughest) marathons in the Northeast
More marathons in Maine
Coming up next, by confirmed date.
-
Mousam Lake Sanford Marathon, Half Marathon, 10K & 5KSanford, MEMarathonHalf Marathon10K5K ~400 runners
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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.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Mount Desert Island Marathon, Half & Relay: common questions
- When is the Mount Desert Island Marathon, Half & Relay?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Mount Desert Island Marathon, Half & Relay held?
- In Bar Harbor, Maine.
- What distances does the Mount Desert Island Marathon, Half & Relay offer?
- Marathon, Half Marathon and Relay.
- How many people run the Mount Desert Island Marathon, Half & Relay?
- About 1,800 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Mount Desert Island Marathon, Half & Relay?
- Registration is handled by the organiser at reg.runmdi.org. Entry fees, caps and deadlines are set there.
- Is registration open for the Mount Desert Island Marathon, Half & Relay?
- Registration status as last checked October 5, 2026: sold out. Listed fee for the longest distance, $170 (from runmdi.org, checked October 5, 2026).
- What time does the Mount Desert Island Marathon, Half & Relay start?
- 8:00 AM EDT.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.