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 20 races on the Washington calendar that October.
- Date
- Saturday, October 31, 2026
- Location
- Bellevue, Washington
- Distances
- 50K, 19.5 Miles, 7.6 Miles, 5K
- Surface
- Trail
- Entry fee
- from $40 across event options; may include kids or shorter events. Check distance-specific prices and fees.
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?
Listed event options start from $40. This minimum may be for a kids or shorter event. Check the official race page for your distance's current price and any additional fees.
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
Within about 60 miles, ordered by approximate straight-line distance between listed locations.
- Feb 13Alexander's Hope Valentine's Day DashBellevue, WA
- Oct 31Trick or Treat 5kSeattle, WA
- Nov 14Let Me Run Spring Fest 5K 2026Seattle, WA
- Nov 282026 Seattle Ghost Marathon, Half & 50KSeattle, WA
- Feb 14My Better Half MarathonSeattle, WA
See every race on the Washington calendar, Washington 5Ks, Washington Ultras, or use the Race Finder for maps and filters.