RunRace USA › Washington › Cougar Mountain Trail Run Series (October)
Cougar Mountain Trail Run Series (October)
Bellevue, Washington · Saturday, October 31, 2026 · 50K, 19.5 Miles, 7.6 Miles, 5K
Official race page & registration ↗Cougar Mountain Trail Run Series (October) takes place on Saturday, October 31, 2026 in Bellevue, Washington. The race offers 4 distances: 50K, 19.5 Miles, 7.6 Miles, 5K. It is run on trail. For anyone travelling in, Seattle is about 9 miles away.
It is one of 107 races on the Washington calendar that October. At $40, entry sits below the $65 median for a Washington ultra.
- Date
- Saturday, October 31, 2026
- Location
- Bellevue, Washington
- Distances
- 50K, 19.5 Miles, 7.6 Miles, 5K
- Surface
- Trail
- Entry fee
- from $40
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Bellevue: check in Oct 30, out Nov 1.
Common questions
When is Cougar Mountain Trail Run Series (October)?
Cougar Mountain Trail Run Series (October) is scheduled for Saturday, October 31, 2026.
Where is Cougar Mountain Trail Run Series (October) held?
Cougar Mountain Trail Run Series (October) is held in Bellevue, Washington. It is about 9 miles from Seattle.
What distances does Cougar Mountain Trail Run Series (October) offer?
The listed distances are 50K, 19.5 Miles, 7.6 Miles, 5K.
How much does Cougar Mountain Trail Run Series (October) cost?
Entry is listed from $40. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Cougar Mountain Trail Run Series (October)?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
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- Oct 31Haunted Hustle 5K & 10KPuyallup, WA
- Oct 31Medal Madness 5K, 10K, 13.1M at Vancouver, WA (44)Vancouver, WA
- Oct 31PB&J Fuel Run 5K/10K/13.1 SEATTLESeattle, WA
See every race on the Washington calendar, Washington 5Ks, Washington Ultras, or use the Race Finder for maps and filters.