Remarkable course. Deep roots.

The Clarence DeMar Marathon and Half Marathon have heart—and history. Read more about Clarence DeMar
Neal crossing the finish line

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

2020 Keynote Speaker: Bill Rodgers

Come listen to and meet one of the sport’s most recognized names and personalities. 4 time Boston and New York City Marathon Champion, former marathon world record holder and #1 ranked marathon runner in the world. Author of multiple books on running and a world running icon. 2020 Race Weekend Schedule

What others are saying about the DeMar Marathon

  • The race director and the town of Keene do an amazing job supporting this race. Roughly 500 volunteers were involved in 2019, for a field size of ~400 marathoners and ~450 half-marathoners. The overall support is exemplary. The final third of the course runs around and through the town of Keene. This is local race and the town comes out and supports runners. There are plenty of well-wishers and locals cheering you on.  Learning about the history and life of Clarence DeMar is inspirational. I read his autobiography pre-race and recommend it.  The medals are big and cool.  Heading up to Keene for this run makes for a rewarding and fulfilling weekend. Good luck if you run CDM (you won’t be disappointed!).

    Ken from Steamboat Springs CO
  • I can’t get over how smooth the entire process was! This race had the best support, even for the back of the packers. All volunteers were still out and enthusiastic! The first half was breathtaking New England beauty, and the second half had the best support. I loved every mile. This was my first full, and I truly plan to run it again.

    Ann from Manchester NH
  • Excellent point-to-point race. Very well organized (packet pick-up, bag check, shuttles to starting point—and for the half marathon, a shuttle back to the starting line, if you parked your car there). The announcers shout out the names of runners as they approach the finish line, often including special notes that you can submit on your registration form (“this is his 30th half marathon!” or “this is her 42th state”). There’s a massage tent with a lot of people working there, so you don’t have to wait too long to be seen. Fantastic post-race food tent (the best food of the 5 different half marathons I’ve run). The race has made an effort to reduce waste by handing out very nice reusable DeMar water bottles instead of the usual disposable water bottles. They have a station in the finish area where you can refill it.

    Jennifer from New Tripoli, PA
  • Iconic New England scenery finishing up on the campus of Keene State College. This race was one of the best organized marathons I have ever participated in. The volunteers were amazing and everyone went above and beyond to make this race a safe and awesome experience. The announcer at the finish line even calls your name out as you cross the finish line. I cannot say enough about this event and would highly recommend the Clarence DeMar Marathon for anyone looking for a great New England marathon. Also, even though I didn’t earn my BQ yet, I plan on making another attempt at it on this race in the future!

    Jeff from US
  • Clarence DeMar was my first full marathon. The experience was absolutely amazing! The area is beautiful with farms and country roads. The leaves were at peak it seemed, and as we ran the leaves were coming down like confetti. There were lots of water stops with happy people and the locals were out helping as well. I felt grateful for one woman who supported me when I had to stop to stretch, offering me a water. It meant a lot! This event seems well supported by everyone and when we stayed at an Airbnb there were other runners there as well and our host was knowledgeable about the race. I must also add that my finisher photo was stellar!!! I highly recommend this race!

    Jackie from Exeter NH

We appreciate the support of all our sponsors

DeMar Level

hoffman family foundation logo

Savings Bank of Walpole logo

Qualifier Level

City of Keene Logo

Cheshire Medical Center Dartmouth Hitchcock logo

Half Marathon Level

True North Networks logo

Water Station Level

Keene Sentinel logo

The Insurance Source logo

C&S Wholesale Grocers logo

Hogancamp PC logo

Deep Roots Massage Logo

KSC Logo

Timken logo

AMT productions

monadnock broadcasting group logo

Tom & Babs Putnam


Monadnock Food Co-op logo

DiLuzio Foley and Fletcher Funeral Homes

Kids DeMar Level

C&S Wholesale Grocers logo

S&S Painting logo

Whitney Brothers Logo

Antioch University logo

Kapiloff Insurance logo

Course Level

Keene Auto Body

Carlisle Wide Plank Floors

Swanzey Oil

Lab 'n Lager

Ciradelli Oil

ReMax Town & Country

Benson Woodworking Company

Glenn & Laurie Lamothe

Friend Level

Tim Small Sales, LLC

Quality Care Collision

Law Office of Pamela P. Little, PLLC

American Family Insurance

MHS Architecture

William DeMar

CED / Consolidated Electric

Ultimate Accessories, LLC