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Triathlon Calendar near Northeast Washington 2025-2026

Explore the top triathlons near Northeast Washington for 2025-2026! We've gathered 103 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
14
Sunday

DCHalf Marathon

5 km 13 mi
Sep
19
Friday

Oktoberfest 10k

5 km 10 km
Sep
20
Saturday

Lost Dog 10k

10 km
Sep
20
Saturday

Burke Lake 10k

10 km
Sep
20
Saturday

Kensington 8K

2 mi 8 km
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
14
Tuesday

Tuesday Night 5k

5 km
Oct
18
Saturday

Autumn Adventure 10k

10 km
Oct
18
Saturday

Harvest Hills Half

5 km 10 km 13 mi
Oct
19
Sunday

Fall Backyard Burn Trail Run - Lake Fairfax

Trail Run 5 mi 10 mi
Oct
26
Sunday

Marine Corps Marathon

26 mi
Oct
26
Sunday

Oktoberfest 5-Miler

5 mi
November 2025
Nov
2
Sunday

Fall Backyard Burn Trail Run - Riverbend

Trail Run 5 mi 10 mi
Nov
2
Sunday

For the Health of It 5k

5 km
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