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District of Columbia Triathlon Calendar 2025-2026

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Explore the best triathlons in District of Columbia for 2025-2026! Our updated list features 45 exciting races across the region. Find your next race in District of Columbia below and join the running community at these great events!

August 2025
Aug
17
Sunday

Summer District Half

5 km 21 km
Aug
17
Sunday

The Legacy Loop 5K

5 km
September 2025
Sep
6
Saturday

International Peace Marathon

21 km 42 km
Sep
6
Saturday

Dashing to Summer's End 10k

5 km 10 km
Sep
6
Saturday

In Their Shoes 5K

5 km
Sep
7
Sunday

Mount Vernon Park 10k

5 km 10 km
Sep
14
Sunday

DCHalf Marathon

5 km 21 km
Sep
19
Friday

Oktoberfest 10k

5 km 10 km
Sep
20
Saturday

5K to End HIV

5 km
Sep
21
Sunday

Autumn Georgetown Half

5 km 21 km
Sep
28
Sunday

Run Geek Run 5K

5 km
October 2025
Oct
4
Saturday

Fort Hunt Park 10k

5 km 10 km
Oct
4
Saturday

Predator and Prey 5k

5 km
Oct
5
Sunday

DC Safe Half

5 km 21 km
Oct
5
Sunday

District 19 Race Series

5 km 19 km 19 mi
Oct
11
Saturday

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

5 km
Oct
11
Saturday

Laufvergnügen

5 km 10 km 21 km
Oct
12
Sunday

Dead Man's Run 5K

5 km
Oct
19
Sunday

DC Fall Classic Half

5 km 21 km
Oct
19
Sunday

Run For A Better Life 5K

5 km
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