Washington Triathlon Calendar 2025-2026

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Explore the best triathlons in Washington for 2025-2026! Our updated list features 350 exciting races across the region. Find your next race in Washington below and join the running community at these great events!

April 2025
Apr
12
Saturday

Walla Walla 6 Hour

Backyard Ultra 6 hr
Apr
12
Saturday

Cottontail 6 & 12 Hour

Backyard Ultra 6 hr 12 hr
Apr
12
Saturday

Half Marathon at Heritage Park

5 km 10 km 15 km 13 mi
Apr
12
Saturday

Jill's Twelve Hour Run, Marathon & Half Marathon

12 hr
Apr
12
Saturday

OAT Run

Trail Run 12 km 13 mi 50 km
Apr
12
Saturday

Loop the Lookout Trail Run

Trail Run 5 km 10 km 15 km
Apr
12
Saturday

Unleash The Cougs 5K

5 km
Apr
13
Sunday

Mill Town Marathon

10 km 13 mi 26 mi
Apr
13
Sunday

Run Like a Fool 5K

5 km
Apr
13
Sunday

The Split Half Marathon

5 km 10 km 13 mi
Apr
13
Sunday

Yakima Skyline 25k

Trail Run 25 km
Apr
19
Saturday

Run With the Goats

Trail Run 50 km
Apr
19
Saturday

Wenatchee Marathon

5 km 10 km 13 mi 26 mi
Apr
19
Saturday

Run the River - Kennewick, WA

5 km 13 mi 26 mi
Apr
19
Saturday

Squak Mountain Trail Run

Trail Run 12 km 13 mi 50 km
Apr
19-20
Sa - Su

Last Fool Standing

Backyard Ultra 5 km
Apr
19
Saturday

The Cherry Blossom Run

5 km 10 km
Apr
19
Saturday

Running in the RAINN 5k

5 km
Apr
19
Saturday

JBLM Fields of Friendly Strife Commander Cup Ten Miler

10 mi
Apr
19
Saturday

White Salmon Baseball Club

5 km 4 mi
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