42^nd Running of the Clarence DeMar Marathon

Keene, NH – Sunday, September 29, 2019

Online Registration will open on January 1, 2019

Online Registration Full Marathon Info Half Marathon Info Team DeMar

Remarkable course. Deep roots.

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

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

2019 Keynote Speaker: Dick Beardsley

Dick is referred to as a running legend in the United States and is best known for his incredible race in the 1982 Boston Marathon. 2019 Race Weekend Schedule

Testimonials

What others are saying about the DeMar Marathon

A lovely small marathon that is very well organized and supported. A big thank you to the race director for not cancelling due to the heat – as someone working on 50 States, this was huge. The ice at every water stop was tremendously helpful as were the misting stations. Great volunteers all along the course, good food at the end, and lots of it!
Cathie 2017
As a runner and a race director I can say that this is quite simply one of the finest half marathons I have run. The volunteers are all helpful and cheerful even at 6 am! The course is beautiful with PR potential which is a great combination. Also the finish line under the arch at Keene State makes you feel like you are in the Olympics. Run this race!”
Grant 2017
Gorgeous marathon through spectacular scenery. The best part, though, is the incredible race director and the volunteers. This is one of the best, and a must-do marathon!
Nancy 2017
This was my first marathon and boy am I glad I chose this one to upgrade my running milestones. Great race, nice location. This event is so well organized; they even let me change from the half to the full at the last minute. The volunteers were awesome, and coordination with local law enforcement was great to keep everyone safe. The cheering at the finish line was INCREDIBLE AND MOTIVATING as well as all the fun signs hung along the way. I’ll be back.
Shae NH 2016
Gorgeous marathon through spectacular scenery. The best part, though, is the incredible race director and the volunteers. This is one of the best, and a must-do marathon!
Nancy AK