CD
Clarence DeMar Marathon
Race Date
Sep 27, 2026
Location
Keene, NH
Course Info
USATF CertifiedTerrain
road
Elevation Gain
0'
Net Drop/km
+0.52 m
Separation
45.0%
Also Offers
26.2M
USATF Certified Course
NH25007JK · 2025 Clarence Demar Half Marathon
Net uphill grade — expect a more challenging race.
Race Day Weather
5-year historical avgStart (Low)
52°
Afternoon (High)
68°
Pleasant conditions — light layers at start, comfortable by finish
0.1"
Precipitation
9 mph
Wind
80%
Humidity
Race Photos
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