Clarence DeMar Half Marathon

Keene, NH, USA · September 26, 2027·
cloudy58°·59° high·Windy·Dry
7
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Race Info

The Clarence DeMar Half Marathon covers 13.1 miles from the Surry Mountain Lake recreation area in Surry to Keene State College. The route follows Route 12A and East Surry Road past Bretwood Golf Course, then runs into Keene along Court Street and Maple Avenue. Runners pass through Wheelock Park and along the bike path, then climb through Greenlawn and Woodland cemeteries before the last miles on Marlboro and Main Streets. The finish is on Appian Way, a pedestrian way at the college, where Clarence DeMar once coached.

Race weekend

Sunday, September 26
7:00 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)
Area Map

Course Map

FAQ

When is the 2027 Clarence DeMar Half Marathon?

The 2027 Clarence DeMar Half Marathon will be held on Sunday September 26, 2027.

What will the weather be like for the 2027 Clarence DeMar Half Marathon?

The forecast calls for a high of 59°F and a low of 56°F with a 0% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 18 years of data
Avg Temp
55°F
L:52° H:58°
RunScore
8
Conditions
Rain Freq
11%
2 of 18 yrs
Wind2mph
Dew51°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
57°/57°Light
7
2025
partly-cloudy-day
58°/66°-
6
2024
cloudy
57°/61°-
7
2023
cloudy
53°/56°-
8
2022
cloudy
41°/49°-
10
2021
cloudy
53°/60°-
7
2019
clear-day
61°/64°-
7
2018
fog
42°/46°-
10
2017
clear-day
58°/74°-
5
2016
fog
36°/47°-
10
2015
fog
36°/45°-
10
2014
fog
54°/57°-
9
2013
fog
45°/50°-
10
2012
cloudy
54°/55°-
9
2011
fog
64°/66°-
5
2010
clear-day
53°/61°-
9
2009
rain
52°/56°Light
9
2008
cloudy
65°/66°-
5