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Triathlon Calendar near Southwest Washington 2025-2026

Explore the top triathlons near Southwest Washington for 2025-2026! We've gathered 176 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
6
Saturday

Frozen Footsteps 10k

5 km 10 km
Dec
6-7
Sa - Su

Devil Dog Ultras

Trail Run 50 km 100 km 100 mi
Dec
6
Saturday

Rock Creek Reindeer Rumble 10k

5 km 10 km
Dec
6
Saturday

Army v Navy 5k

5 km
Dec
7
Sunday

Fall Backyard Burn Trail Run - Fountainhead

Trail Run 5 mi 10 mi
Dec
7
Sunday

Sleigh Bell Strider 10k - Arlington

5 km 10 km
Dec
20
Saturday

Candy Cane 10k

5 km 10 km
Dec
21
Sunday

Winter Wonderland 10k

5 km 10 km
Dec
21
Sunday

Santa’s Sleigh Half Marathon

5 km 13 mi
Dec
26
Friday

Boxing Day 10k

5 km 10 km
Dec
31
Wednesday

Running Out of Time 12k

5 km 12 km
January 2026
Jan
31
Saturday

Mid-Maryland Trail Festival 50k

Trail Run 50 km
March 2026
Mar
21
Saturday

Rock 'n' Roll Washington DC

5 km 13 mi
April 2026
Apr
4
Saturday

Bull Run Run 50 Miler

Trail Run 50 mi
Apr
11-12
Sa - Su

Credit Union Cherry Blossom

5 km 10 mi
May 2026
May
2
Saturday

Farm Park Challenge

Trail Run 25 km 3 hr ... 6 hr 10 hr
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