The Clarence DeMar Marathon is a tremendously well-organized, welcoming race held during early New England foliage season. The 26.2-mile course is USATF-certified and a Boston qualifier. At the DeMar, we give our runners a world-class experience as we celebrate each and every cross of the finish line.

Full Marathon

The Full Marathon begins in Gilsum, N.H. at 7 am. From the start line, you follow the route to Surry Mountain Dam, where you get extraordinary views and a chance to high-five your fellow marathoners.

There are portapotties available every six miles on the course and at the finish. Staffed water stations are available approximately every 1.5 miles.

Half Marathon

So you’re only half-crazy? Then the DeMar Half Marathon is for you! The 13.1-mile course winds through exquisite scenery of early foliage season. All DeMar half-marathoners enjoy a world-class running experience, along with the support and encouragement of 300+ volunteers.
Register here.