Course
Marathon42.2 km
Half Marathon21.1 km
Key dates
- ★Race daySeptember 2027 · date to be announced
Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.
About
The Clarence DeMar Marathon honors Clarence DeMar, a native New Englander who won the Boston Marathon a record seven times. The marathon and half marathon route runs through the rural Monadnock region around Keene, New Hampshire.
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Save Clarence DeMar Marathon to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Save Clarence DeMar Marathon to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.