Clarence DeMar Marathon
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Clarence DeMar Marathon
The Clarence DeMar Marathon is a road race held in Keene, New Hampshire. The 48th running is scheduled for Sunday, September 27, 2026. The event program includes a full marathon and a half marathon, and the race weekend contains separate race descriptions and logistics information.
The course passes through the Keene area; the final third of the course runs around and through the town. Race materials and past reporting note substantial community involvement. In 2019 roughly 500 volunteers supported the event, with an estimated field size of about 400 marathon entrants and about 450 half marathon entrants that year. The event lists additional program elements such as a kids DeMar, a super seniors category, race apparel, and multiple sponsor levels.
Organizers publish race results and a race weekend schedule. The 2026 event lists a keynote speaker for the weekend. Opportunities for volunteers and sponsors are part of the event structure. Contact information locates the event in Keene, New Hampshire. Visit the organization's website for the most recent information.
