Alaska · 3.1 mi mountain run
Mount Marathon Race
Mount Marathon Race is a 3.1 mi mountain run event held in Seward, Alaska. Its next confirmed date is Sunday, July 4, 2027. About 1,000 runners take part across all distances.
- Race day
- July 4, 2027
- Location
- Seward, AK
- Field size
- ~1,000 runners
Race details
- Date
- Sunday, July 4, 2027
- Location
- Seward, Alaska
- Distances
- 3.1 mi mountain run
- Field size
- About 1,000 runners
- Course
- ~3,022 ft
- Registration
- runsignup.com
- Official website
- sewardak.org
Registration, course & weather
- Registration status
- Registration status as last checked October 5, 2026: not announced
- Course profile
- Loop course; Trail surface
About the Mount Marathon Race
A legendary Fourth of July mountain race in Seward that sends runners straight up and down 3,022-foot Mount Marathon. Over a century old and famously grueling, it draws competitors and huge crowds of spectators.
Rankings and notes
- Rankings and awards
- Nearly 100-year-old race; called 'the toughest 5K on the planet'; up to 30,000 spectators; Alaska Sports Hall of Fame event
- Notes
- “Toughest 5K” mountain race, iconic event
More 5Ks in Alaska
Coming up next, by confirmed date.
More races in Seward
More upcoming races in Alaska
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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.
Mount Marathon Race: common questions
- When is the Mount Marathon Race?
- The next confirmed date is Sunday, July 4, 2027.
- Where is the Mount Marathon Race held?
- In Seward, Alaska.
- What distances does the Mount Marathon Race offer?
- 3.1 mi mountain run.
- How many people run the Mount Marathon Race?
- About 1,000 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 Marathon Race?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Mount Marathon Race?
- Registration status as last checked October 5, 2026: not announced.
- What is the course like at the Mount Marathon Race?
- Loop course; Trail surface.
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.