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Trail Running Calendar near South Lake Union 2025-2026

Monthly updates for South Lake Union

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

Explore the top trail runs near South Lake Union for 2025-2026! We've gathered 38 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
20
Sa

Seward Solstice Run

Trail Run 4 mi 10 km
January 2026
Jan
3
Sa

Absolution Run

Trail Run 4 mi 8 mi
Jan
3
Sa

Race to the Top of Mount Si

Trail Run 4 mi
Jan
10
Sa

Bridle Trails Winter Running Festival

Trail Run 5 mi 10 mi 15 mi 50 km
Jan
17
Sa

Frost Eagle Trail Run

Trail Run 5 mi 13 mi
Jan
18
Su

Coffee Lovers and Chocolate Lovers 10K

Trail Run 5 km 10 km
Jan
31
Sa

Interlaken Icicle Dash

Trail Run 5 km 10 km
February 2026
Feb
8
Su

West Seattle Beach Run - Fat Ass

Trail Run Half Marathon Marathon 50 km
Feb
21
Sa

Lord Hill Trail Run

Trail Run 5 km 10 mi 20 mi 50 km
March 2026
Mar
14
Sa

Pie High Trail Run

Trail Run 5 km 10 km Half Marathon
Mar
21
Sa

Dash Point Trail Run

Trail Run 10 km 13 mi
Mar
28
Sa

A2PT 5k MS Fundraiser

Trail Run 5 km
Mar
28
Sa

Spring Run for Fun @ Bridle Trails

Trail Run 5 km 10 km Half Marathon Marathon
Mar
29
Su

Redmond Marathon

Trail Run 26 mi
April 2026
Apr
18
Sa

Squak Mountain Trail Run

Trail Run 12 km Half Marathon 50 km
May 2026
May
8-9
Fr - Sa

Tiger Claw

Trail Run 3 mi 50 km
May
9
Sa

Trillium Trail Run

Trail Run 5 km 10 km
May
9
Sa

Cougar Mountain Trail Run Series

Trail Run 5 mi 11 mi
May
16
Sa

Soaring Eagle Trail Run

Trail Run 5 km 10 km 20 km
May
30
Sa

Lake Tye Challenge

Trail Run 3 hr 6 hr 12 hr