48^th Running of the Clarence DeMar Marathon

Sunday, September 27th, 2026

FULL MARATHON INFO HALF MARATHON INFO ABOUT TEAM DEMAR KIDS DEMAR INFO SUPER SENIORS

48^th Running of the Clarence DeMar Marathon

Sunday, September 27th, 2026

FULL MARATHON INFO HALF MARATHON INFO ABOUT TEAM DEMAR KIDS DEMAR INFO SUPER SENIORS

Remarkable course. Deep roots.

The Clarence DeMar Marathon and Half Marathon have heart—and history.

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

Keynote Speaker for 2026

Jack Fultz is a retired American long‑distance runner best known for winning the famously sweltering 1976 Boston Marathon—later dubbed the “Run for the Hoses”—with a time of 2:20:19. A standout collegiate athlete at Georgetown University and former U.S. Coast Guard member, Fultz rose to prominence in the 1970s and went on to qualify for three consecutive U.S. Olympic Trials. Beyond his racing career, he has served for decades as a coach, mentor, and sports psychology educator, leaving a lasting impact on the running community. [en.wikipedia.org], [wcvb.com]

Race Weekend Schedule

Testimonials

What others are saying about the Clarance 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!).