Washington Trail Running Calendar 2025-2026

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Explore the best trail runs in Washington for 2025-2026! Our updated list features 283 exciting races across the region. Find your next race in Washington below and join the running community at these great events!

December 2025
Dec
27
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
January 2026
Jan
3
Saturday

Resolution Run - La Center

5 km 10 km
Jan
3
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Jan
10
Saturday

Half Marathon at Heritage Park

5 km 10 km 13 mi
Jan
17
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Jan
25
Sunday

Langlauf XC Ski Race

Trail Run 10 km
February 2026
Feb
7
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Feb
14
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
March 2026
Mar
7
Saturday

Lake Sammamish Half Marathon

13 mi
Mar
8
Sunday

The Kirk-Wood Half Marathon

13 mi
Mar
14
Saturday

Kirkland Shamrock Run

5 km 10 km
Mar
14
Saturday

Little Backyard Adventure

Backyard Ultra 3 hr 6 hr 12 hr
Mar
14
Saturday

St. Paddy's Day Run

5 km 10 km 13 mi
Mar
14
Saturday

Frosty Moss Relay

30 mi 50 km 80 mi
Mar
14
Saturday

The Best Races - Seattle

5 km 10 km 13 mi
Mar
22
Sunday

Couve Clover Run

3 mi 7 mi 10 mi
Mar
22
Sunday

Dugan's Run

5 km
Mar
27-28
Fr - Sa

Badger Mountain Challenge - Richland, WA

Trail Run 15 km 55 km ... 100 km 100 mi
Mar
28
Saturday

Yakima River Canyon Marathon

21 km 42 km
Mar
29
Sunday

Mill Town Half Marathon

5 km 10 km 13 mi
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