The Clarence DeMar Marathon is an annual race held in Keene, New Hampshire, celebrating the life and achievements of the legendary "Mr. DeMarathon." The event is a popular choice for runners aiming to qualify for the Boston Marathon, as its full marathon course is a USATF-certified, point-to-point race known for its scenic views of early New England foliage. In addition to the challenging 26.2-mile distance, the event also welcomes participants of all ages and abilities with a half marathon, a Super Senior Marathon for runners aged 70 and over, and a DeMar Kids Marathon where children complete a cumulative 25 miles before race day. The course culminates on the historic Appian Way at Keene State College, near where DeMar once coached and inspired generations of runners.
Races
Marathon
Half Marathon
Race Date:
28 September, 2025
The Clarence DeMar Full Marathon is a popular Boston Marathon qualifier, featuring a USATF-certified, point-to-point course that runs through the picturesque countryside of New Hampshire. The race is known for its scenic views of early fall foliage and a net downhill profile, which provides a challenging yet fair test for runners
Weather based on historical averages.
FAQs
What is the Clarence DeMar Full Marathon?
How long is the Clarence DeMar Full Marathon?
Where does the Clarence DeMar Full Marathon take place?
What is the elevation gain of the Clarence DeMar Full Marathon?
How can I prepare for the Clarence DeMar Full Marathon?
How do I choose the right training plan for the Clarence DeMar Full Marathon?
The Clarence DeMar Full Marathon is a popular Boston Marathon qualifier, featuring a USATF-certified, point-to-point course that runs through the picturesque countryside of New Hampshire. The race is known for its scenic views of early fall foliage and a net downhill profile, which provides a challenging yet fair test for runners
The Clarence DeMar Full Marathon is 42km long.
The Clarence DeMar Full Marathon takes place in Keene, New Hampshire, United States of America.
The Clarence DeMar Full Marathon elevation gain is 196 metres, which Runna classifies as a Flat race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Clarence DeMar Full Marathon?
The Clarence DeMar Full Marathon is a popular Boston Marathon qualifier, featuring a USATF-certified, point-to-point course that runs through the picturesque countryside of New Hampshire. The race is known for its scenic views of early fall foliage and a net downhill profile, which provides a challenging yet fair test for runners
How long is the Clarence DeMar Full Marathon?
The Clarence DeMar Full Marathon is 42km long.
Where does the Clarence DeMar Full Marathon take place?
The Clarence DeMar Full Marathon takes place in Keene, New Hampshire, United States of America.
What is the elevation gain of the Clarence DeMar Full Marathon?
The Clarence DeMar Full Marathon elevation gain is 196 metres, which Runna classifies as a Flat race.
How can I prepare for the Clarence DeMar Full Marathon?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Clarence DeMar Full Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Qualifier:
Boston Marathon Qualifier
Tags:
Nature
Boston Marathon Qualifier
Kid friendly
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Clarence DeMar Marathon or Keene Elm City Rotary Club. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Clarence DeMar Marathon website.
