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Trail Running Calendar near Montgomery County 2025-2026

Explore the top trail runs near Montgomery County for 2025-2026! We've gathered 74 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
6
Saturday

Arlington 9/11 Memorial 5K Race

Sep
7
Sunday

Mount Vernon Park 10k

10 km
Sep
7
Sunday

Reston Triathlon

Triathlon
Sep
9
Tuesday

Tuesday Night 5k

5 km
Sep
11
Thursday

Patriot Day 10k

10 km
Sep
13
Saturday

Tekau's Heart Memorial 5K Run

5 km
Sep
14
Sunday

DCHalf Marathon

5 km 13 mi
Sep
19
Friday

Oktoberfest 10k

5 km 10 km
Sep
20
Saturday

Burke Lake 10k

10 km
Sep
20
Saturday

Kensington 8K

2 mi 8 km
Sep
20
Saturday

Run On The Rocks

10 mi 13 mi 20 mi
Sep
21
Sunday

Parks Half Marathon

13 mi
Sep
28
Sunday

Run Geek Run 5K

5 km
October 2025
Oct
4
Saturday

MoCo Cares Charity Race

5 km 10 km
Oct
4
Saturday

Miles for Mammograms 10k

10 km
Oct
5
Sunday

Fall Foliage 10k

10 km
Oct
11
Saturday

Racin' to Beat Cancer Half

5 km 10 km 13 mi
Oct
11
Saturday

Latinas Leading Tomorrow (LLT) Reach for the Stars 5K

5 km
Oct
12
Sunday

Rick O'Donnell Memorial Ultra Challenge

Trail Run 5 mi 4 hr 8 hr
Oct
14
Tuesday

Tuesday Night 5k

5 km
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