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Marathon Calendar near Gaithersburg 2025-2026

Explore the top marathons near Gaithersburg for 2025-2026! We've gathered 6 exciting races in the area. Check out our detailed list below to find your next local race.

October 2025
Oct
26
Sunday

Marine Corps Marathon

26 mi
November 2025
Nov
30
Sunday

EOD Warrior Holiday Dash Marathon

5 km Half Marathon Marathon
March 2026
Mar
7
Saturday

MCRRC Seneca Creek Greenway Trail Marathon

Trail Run Marathon 50 km
Mar
15
Sunday

St. Patrick's Marathon

5 km Half Marathon Marathon
May 2026
May
2
Saturday

Farm Park Challenge

Trail Run 25 km 3 hr ... 6 hr 10 hr
May
2
Saturday

Potomac River Run Marathon

13 mi 26 mi
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