DeMar Marathon

The Clarence DeMar Marathon was established in 1978 to honor former Keene resident Clarence DeMar.

We currently offer two competitive races, a Full Marathon and Half Marathon, and two community wellness programs: the DeMar Kids Marathon and DeMar Super Senior Marathon.

Fees

Full Marathon: $110 until 11:59 pm 8/23/26 / $120 until 11:59 pm 9/13/26 / $130 through race day
Half Marathon: $80 until 11:59 pm on 8/23/26 / $90 until 11:59 pm on 9/13/26 / $100 through race day
​Super Seniors & Kids’ Marathons: Free with completion of mileage log