Clarence DeMar Marathon

Race Date

Sep 27, 2026

Location

Keene, NH

Logistics

Race Day

Sunday, September 27, 2026

Start Time

TBA

Start Location

Keene, NH

Directions

Course Info

USATF Certified

Course Type

Loop Course

Terrain

road

Difficulty

Ultra-Flat

Net Drop/km

+0.52 m

Separation

45.0%

Also Offers

26.2M

USATF Certified Course

NH25007JK · Expires 2035 · 2025 Clarence Demar Half Marathon

Net uphill grade — expect a more challenging race.

Race Day Weather

5-year historical avg

Start (Low)

52°

Afternoon (High)

68°

Pleasant conditions — light layers at start, comfortable by finish

0.1"

Precipitation

9 mph

Wind

80%

Humidity

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