Register as Traditional Runner

Online registration is closed. Same day registration will be available on the day of the race.

Register as Team DeMar Runner

Register Now
  • Commit to fundraising and get your racing bib for free!
  • Click Register Now button above
  • Click ‘Join the Event’ on the CrowdRise site
  • Select your Fundraising Team, receive your personalized links/buttons, and start fundraising!
  • Read more about the Team DeMar fundraising teams

There is a registration processing and credit card fee of 6.25% plus $1.25 per on line registrant. Online registration closes on 9/20/17 at 12:00 pm.

Registration Fees

Full Marathon
$90 until 11:59 p.m. on 8/27/17
$100 until 11:59 p.m. on 9/11/17
$110 from 9/11/17 until race day

Half Marathon
$60 until 11:59 p.m on 8/27/17
$70 until 11:59 p.m. on 9/11/17
$80 from 9/11/17 until race day

Super Seniors & Kids’ Marathons
Free with completion of mileage log

demar-prizesRace Weekend and Race Day Registration

Race Weekend registration is available, space-permitting, at Runner Check-In on Friday, September 22, 2017, and Saturday, September 23, 2017. (See the Race Day Schedule for check-in information.)

Full Marathon runners can register on race day at Keene State College. Registration volunteers will be stationed at the shuttle bus site at Keene State College.

Half Marathon runners will register at the startling at Surry Recreational Dam. Space permitting, you may take the shuttle bus from Keene to the start line even if you haven’t yet registered.

We accept cash or check only. Checks are payable to Clarence DeMar Marathon Corp.

Full & Half Runner Bib and Packet Pickups

Runners can check in and pick up their bibs and runner packets according to the following schedule.

Friday, September 22, 2017
4-7 p.m.
Ted’s Shoe & Sport
115 Main St
Keene NH

Saturday, September 23, 2017
12-5 p.m.
Spaulding Gymnasium
Keene State College

RACE DAY: Sunday, September 24, 2017
5:45 a.m.
Spaulding Gymnasium
Keene State College (see campus map)

Full Marathoners: If picking up your bib and packet on Race Day, do so at Keene State College and then board the shuttle bus to the start in Gilsum.

If you are having family or friends drop you off in Gilsum, pick up your bib and packet at Keene State College first.

Half Marathoners: If you are pre-registered for the half and not checking in until race day, your bib and packet will be waiting for you at the Surry Recreational Dam. You may ride the shuttle bus from Keene State College to the Dam without your bib and packet.


Every registered runner will receive a Clarence DeMar Marathon t-shirt. (Plus a finisher’s medal!) This year we’ll be using an NB9119 long sleeve performance shirts. A sizing chart is available on the Online Registration page.

BUT… If you want to guarantee that you’ll get your requested shirt size, register early!!

We do our best to give each runner their size, but to get the really cool t-shirts we all love, we have to order pretty far in advance. If you register early, then we can make a more accurate order.

Help us help you—register early! And pick up your packet with your amazing t-shirt early!

Early Start Option

If you expect to take more than six hours to complete the Full Marathon, you may begin the race at 7 a.m. You must be pre-registered to start at 7 a.m.. There will be no race day registrations for Early Starters. All Early Starters will be issued a specific bib number series. If your bib number is not in that designated series, you are not permitted to start at 7 a.m.

If you think you may finish in 6 hours or less, you are required to register for the regular 8 a.m. start.

DeMar race officials reserve the right to deny requests for early registration, or otherwise switch an Early Start registration to the regular 8:00am start. If you have registered for the Early Start and we move you to the regular start, we will let you know in advance of the race.

Important Early Start Information

  • Early Start runners should be on the 6 a.m. shuttle bus from Keene State College. (See the Race Day Schedule for more bus information.)
  • If you are being dropped off by family or friends in Gilsum, arrive no later than 6:25 a.m.
  • All pre-registered Early Starters must start at 7 a.m.
  • All Early Starters are required to use a headlamp and reflective clothing due to the early dawn daylight conditions.
  • There is a 7-hour 30-minute time limit to complete the course beginning at 7 a.m. No marathon course support will be available after 2:30 p.m.
  • Water stops will be self-serve in the early stages of the course. Portapotties are available every six miles on the course and at the finish.

All participants will be officially timed and their results recorded as long as they are able to finish within the 7 and 1/2 hour time frame. All finishers receive medals. No early starter will be eligible for any award other than your finisher’s medal.


There are NO refunds available.

Requests for deferment can be made to the race committee if done before 9/14/17 and must be for injury reasons only. If a deferment is granted, the runner’s entry will be deferred for the following year’s Clarence Demar Marathon.

Have more questions? Read our FAQ.