Clarence DeMar Marathon
Clarence DeMar Marathon follows a net-downhill route into Keene, blending New Hampshire lake and woodland roads with a historic Boston-qualifying race.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked August 5, 2026.
Quick facts
- Historic New Hampshire Boston qualifier.
- Net-downhill point-to-point route into Keene.
- Rural roads, forest, and lake scenery.
About the Clarence DeMar Marathon
Named for seven-time Boston Marathon champion Clarence DeMar, this New Hampshire race has a deep regional history. Its point-to-point format finishes in central Keene.
Course
The certified course trends downhill from Gilsum toward Keene while retaining enough rollers to punish overly aggressive pacing. Rural roads, forest, and lake views dominate before the city finish.
Race-day weather
Late September can deliver ideal cool New England conditions, but warm sun or rain remains possible. Shaded rural miles may feel notably cooler than the finish.
Past Clarence DeMar Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, September 27, 2026 | Upcoming | — |
| 2025 | Sunday, September 28, 2025 | Completed | Open results |
| 2024 | — | Completed | Open results |
Ran this race?
Share your race experience
Your firsthand experience can help future runners understand the course, logistics, and race-day atmosphere. A short report takes about two minutes.
Clarence DeMar Marathon FAQ
When is the Clarence DeMar Marathon?
The 2026 Clarence DeMar Marathon is on Sunday, September 27, 2026.
Is Clarence DeMar Marathon a Boston qualifier?
Yes. Clarence DeMar Marathon is a Boston Marathon qualifier. To use the result, you must run the certified full-marathon course within the qualifying window and meet the current standard for your age and gender. Meeting the standard lets you apply but does not guarantee entry, and net-downhill courses can receive a time adjustment under current B.A.A. rules. Review the Boston qualifying times and downhill-course rules, or browse upcoming Boston qualifier marathons.
Featured collections
Race organizer or timing partner?Send an official race update
Send us confirmed dates, registration links, results, live tracking, or course changes. Include the source link so runners can reach the right information.