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Trail Running Calendar near Sammamish 2025-2026

Explore the top trail runs near Sammamish for 2025-2026! We've gathered 86 exciting races in the area. Check out our detailed list below to find your next local race.

June 2025
Jun
28
Saturday

Black Diamond Triathlon

Triathlon
Jun
28
Saturday

Maple Valley Bear Run & Walk

5 km
July 2025
Jul
4
Friday

Carnation's Run for the Pies and Pints! 5k

5 km
Jul
5
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
Jul
5
Saturday

Cherry Bomb Marathon

13 mi 26 mi 50 km
Jul
6
Sunday

Bottle Rocket Marathon

13 mi 26 mi 50 km
Jul
8
Tuesday

Seward Sizzler Trail Run

Trail Run 4 mi 10 km
Jul
12
Saturday

Cougar Mountain Trail Run Series #3

Trail Run 5 km 10 mi 19 mi
Jul
18-19
Fr - Sa

Mount Rainier Half Marathon

Trail Run 5 km 10 km 13 mi
Jul
19
Saturday

Float Dodger 5K

5 km
Jul
19
Saturday

Half Marathon at Lowell Riverfront Park

5 km 10 km 15 km 13 mi
Jul
23
Wednesday

Dirt Circus - Seattle

Trail Run
Jul
26-27
Sa - Su

Jack & Jill Downhill Marathon

13 mi 26 mi
Jul
26
Saturday

Seattle - HFTC 5k

5 km
Jul
27
Sunday

Craft Classic Seattle

5 km 13 mi
Jul
27
Sunday

Lake Wilderness Aquathon

Aquathlon
August 2025
Aug
2
Saturday

Lake Tye Triathlon

Triathlon
Aug
2
Saturday

Half Marathon at Langus Riverfront Park

5 km 10 km 15 km 13 mi
Aug
9
Saturday

Cougar Mountain Trail Run Series #4

Trail Run 5 km 14 mi 26 mi
Aug
10
Sunday

Lake Union 10K

10 km
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