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Marathon Calendar near Arlington 2025-2026

Monthly updates for Arlington

Get new running races (and updates) in your inbox every month.

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

February 2026
Feb
1
Su

The Great Frosty Forest 50k

Trail Run 5 km 10 km ... Marathon 50 km
March 2026
Mar
7
Sa

MCRRC Seneca Creek Greenway Trail Marathon

Trail Run Marathon 50 km
Mar
15
Su

St. Patrick's Marathon

5 km Half Marathon Marathon
May 2026
May
2
Sa

Farm Park Challenge

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

Potomac River Run Marathon

13 mi 26 mi
October 2026
Oct
25
Su

Marine Corps Marathon

26 mi