DeMar: The race to run in New Hampshire.

Whether you’re a first-timer or a 50-stater, there’s only one race to run in New Hampshire. At DeMar, you’re not treated as an entrant, but a guest of honor. See what makes DeMar different

Remarkable course. Deep roots.

The Clarence DeMar Marathon and Half Marathon have heart—and history. Read more about Clarence DeMar

Be part of the legacy.

When you run the Clarence DeMar Marathon, you become a part of our history. And we’d like to become part of yours. Register to run

What others are saying about the DeMar Marathon

  • testimonial-2
  • testimonial-4
  • testimonial-2
  • testimonial-1
  • testimonial-3
  • “You will be doing yourself a huge favor by running this marathon.”

    2013 Marathoner, Cranston, RI
  • “I had the privilege to run in famously scenic places and this marathon is up there with the best.”

    2014 Marathoner, Boston, MA
  • “This is a small race in a gorgeous part of New England. It is extremely well-organized, designed for runners. It is special because of the heritage and the man it honors, the volunteers and organizers LOVE their race, and it features the beauty of New Hampshire.”

    2015 Marathoner, Colorado Springs, CO
  • “As good as a small race gets. Spot-on organization with race day packet pickup and easy logistics. Indoor staging area with plenty of room to stretch and lots of bathrooms. Free parking close to the finish. Medal and shirt are first rate. My new favorite small marathon.”

    2015 Marathoner, Pittsburgh, PA
  • “The first 15-16 miles or so are absolutely beautiful New England countryside. The race is extremely well organized, and most everyone involved with the race was positive and friendly. No crazy crowds or hassles!”

    2014 Marathoner, Concord, MA

We appreciate the support of all our sponsors

DeMar Level

Hoffman Family Foundation logo

Liberty Mutual logo

Qualifier Level

Keene Sentinel logo

Body & Soul Fitness logo

Paragon Digital logo

Savings Bank of Walpole logo

True North Networks logo

Ted's Shoe & Sport logo

New England Chevy Dealers logo

Cheshire Medical Center logo

Water Level

S&S Painting logo

SafeCo Insurance logo

Hamblet Electric logo

Hogancamp PC logo

C&S Wholesale Grocers logo

Rountree Ford Lincoln and Quick Lane logos

John G. Burk & Associates logo

The Insurance Source logo

Kids Level

Austin Mutual Insurance logo

Tim Small Sales


NBT Bank logo

St. Martins Lane logo

Filtrine logo

T-Bird Mini Marts logo

IPG Employee Benefits logo

Elm City Brewing logo

Thomas S. Bates CPA logo


Mary Delisle and George Foskett

Rudy Fedrizzi

Liz Coppola

Ellie Fedrizzi

Glenn Lamothe

Ann Heffernono

Patricia Fedrizzi