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Trail Running Calendar near Sammamish 2025-2026

Monthly updates for Sammamish

Get new running races (and updates) in your inbox every month.

Explore the top trail runs near Sammamish for 2025-2026! We've gathered 34 exciting races in the area. Check out our detailed list below to find your next local race.

June 2026
Jun
13
Sa

Cougar Mountain Trail Run Series

Trail Run 5 km 8 mi 15 mi
Jun
20
Sa

Tiger Peak Challenge

Trail Run 5 mi Half Marathon 50 km
Jun
20
Sa

Hotfoot Trail Run

Trail Run 5 km
July 2026
Jul
11
Sa

Cougar Mountain Trail Run Series

Trail Run 3 mi 11 mi 20 mi
Jul
18
Sa

Mount Rainier Half Marathon

Trail Run 5 km 10 km 13 mi
August 2026
Aug
8
Sa

Cougar Mountain Trail Run Series

Trail Run 5 km 15 mi 26 mi
Aug
9
Su

Tunnel Vision Marathon

Trail Run Half Marathon Marathon
September 2026
Sep
12
Sa

Cascade Express Marathon

Trail Run 13 mi Marathon
Sep
12
Sa

Beat the Blerch

Trail Run 5 km 10 km Half Marathon Marathon
Sep
13
Su

Tunnel Light Marathon

Trail Run Half Marathon Marathon
October 2026
Oct
3-4
Sa - Su

North Bend Trail Fest

Trail Run 10 km 30 km
Oct
5
Mo

North Bend Skyline 30K

Trail Run
November 2026
Nov
7
Sa

Grand Ridge Trail Run

Trail Run 5 mi Half Marathon Marathon 50 km
December 2026
Dec
12
Sa

Pigtails Run

Trail Run Half Marathon Marathon 50 km