Trail races near Seattle (2026-27)
Updated
8 trail races are coming up near Seattle in the next 90 days; the next is Lake Washington Half Marathon on Saturday, October 17 in Kirkland. 25 trail races are listed near Seattle for the next 12 months.
All SeattleSeattle (city) (5)Eastside & South King (16)Snohomish County (2)Tacoma & South Sound (2)
By date
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Lake Washington Half Marathon
Sat Oct 17 · 8:00 AM · Kirkland · Eastside & South King
Half marathonTrail
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from $40Goes up Oct 19
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Ten Trails Active Club Trot n' Treat Relay Scramble
Wed Oct 28 · 6:30 PM · Black Diamond · Eastside & South King
11KTrail
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Cougar Mountain Trail Run Series (October)
Sat Oct 31 · 8:00 AM · Bellevue · Eastside & South King
5K7.6 miles19.5 miles50KTrail
from $40 -
from $52Goes up Nov 8
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from $15
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Ten Trails Active Club 5k Turkey Trot
Thu Nov 26 · 8:30 AM · Black Diamond · Eastside & South King
5KTrail
from $10 -
from $30Goes up Nov 1
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Ten Trails Active Club Heartfelt Hustle
Sat Feb 13 · 8:00 AM · Black Diamond · Eastside & South King
5KTrail
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Woodinville Half and 10K
Sat Feb 27 · 8:00 AM · Woodinville · Eastside & South King
10KHalf marathonTrail
from $60Goes up Nov 16 -
Brooks Lake Sammamish Half Marathon presented by REI
Sat Mar 6 · 7:30 AM · Redmond · Eastside & South King
Half marathonTrail
from $91Goes up Nov 1 -
from $51Goes up Nov 1
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from $150Goes up Nov 1
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Bainbridge Island Parks & Trails Foundation Trillium Trail Run
Sat May 8 · 8:30 AM · Bainbridge Island · Seattle (city)
1 mile5K10KTrail
from $30Reg. closed -
from $35Reg. closed
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Evergreen Half and 5 Mile
Sun May 23 · 8:00 AM · Snohomish · Snohomish County
5 milesHalf marathonTrail
from $55 -
Lake Wilderness Triathlon and Run
Sat Jun 5 · 7:00 AM · Maple Valley · Eastside & South King
5.5K10KTrail
from $55Goes up Apr 26 -
from $92Goes up Nov 1
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from $125
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Snoqualmie Valley Half
Sat Jun 19 · 8:30 AM · Carnation · Eastside & South King
10KHalf marathonTrail
from $54Goes up Nov 1 -
from $75Reg. closed
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from $65Goes up Dec 31
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Iron Horse Half Marathon
Sun Aug 29 · 7:00 AM · North Bend · Eastside & South King
Half marathonTrail
from $97Goes up Jan 1 -
Redmond Harvest Half Marathon
Mon Sep 6 · 8:30 AM · Redmond · Eastside & South King
Half marathonTrail
from $59Reg. closed -
Cirque Series - Crystal Mountain, WA
Sat Sep 11 · 8:00 AM · Crystal Mountain · Eastside & South King
7.9 milesTrail
from $99
Quick answers
How many trail races are near Seattle in the next 3 months?
8 trail races are listed near Seattle between October 17 and January 15. The next is Lake Washington Half Marathon on Saturday, October 17 in Kirkland.
What is the cheapest trail race near Seattle right now?
Ten Trails Active Club 5k Turkey Trot on November 26 has the lowest listed entry fee in the next 90 days: $10. Prices are before the registration platform's processing fee.
When does the next early-bird price end for trail races near Seattle?
West Seattle Monster Dash: the 5K goes from $40 to $45 after October 19. 10 more of these trail races publish a later price increase.
Are there trail races near Seattle this weekend?
Yes, 1: Lake Washington Half Marathon (Sat).