Cougar Mountain Trail Run Series (October)
Sat, Oct 31, 2026, 4:00 AM PDT
- Type
- Run
Finish signup on the organizer site (check fees and dates there).
Race feel
Embrace the Halloween spirit on Bellevue's scenic trails, run for King County Parks, and compete for costume awards or podium finishes.
- Fun
- Scenic
- Competitive
- Festive
- For a Cause
Fun
Scenic
Competitive
Festive
For a CauseGreat for
- All Genders Welcome
Past race snapshot
What the field usually feels like
A plain-English read from past public results. It is helpful context, not a prediction.
Past result sets can use different distance labels by year. Choose the distance version first, then pick from the years available for that version.
Crowd
Small field
74 7.6 Miles finishers in 2025. A quieter race where the pack may spread out more quickly.
Typical finish
1:26:47
Think middle-of-the-pack, using chip time when available.
Competitive feel
Lively front
The faster end moves well, but the race still has room for everyday runners. Front-group read: 58:07.
People mix
Balanced mix
About 50% women and 50% men among finishers who listed gender.
Quick read
For the 7.6 Miles in 2025, this looks like a small field: 74 finishers are represented here. A middle-of-the-pack finish was around 1:26:47. The quicker front of the field averaged about 58:07. Use it as a feel check, not a promise about race day.
Show the year-by-year numbers
| Distance | Year | Finishers | Typical | Average | Front 10% | Fastest M / W |
|---|---|---|---|---|---|---|
| 7.6 Miles | 2025 | 74 | 1:26:47 | 1:30:11 | 58:07 | 49:04 / 59:31 |
| 19.5 Miles | 2025 | 36 | 4:14:12 | 4:32:06 | 3:25:00 | 3:25:47 / 3:16:17 |
| 31.07 Miles | 2025 | 38 | 7:22:58 | 7:16:58 | 5:21:59 | 5:12:53 / 7:03:45 |
Last summary update: Apr 30, 2026
From the organizer
Welcome to the 2025 edition of the Cougar Mountain Trail Run Series, put on by Seattle Running Club and Northwest Trail Runs. Our events support King County Parks, with a portion of every entry going to KC Parks.
OCTOBER'S RACE ONLY - COSTUME CONTEST/CHALLENGE: The October Cougar Mountain races fall a few days before Halloween so let's see who can get into the spirit and run some trails in costume. UPDATE - there will be an award for best costume (any distance) and best group costume (any distance). Winners will receive a gift certificate and a unique trophy from Otter Pawz Lazer .
October 7.6-Mile Cross Country // Cougar Cup - The 7.6-Mile Race is a team race - individuals are still eligible to run the 7.6 mile race for podium awards but not the Cougar Cup . The Cougar Cup is open to any team, group or club. In order to participate in the event, teams must sign-up the morning of the race and declare who is on the team. All team members must sign a waiver and list an emergency contact who is not racing. All teams must pay the entry fee of $180. This is a mixed team event and 2 women must score for each team. Teams can consist of 4-6 people with 4 people scoring and 2 displacing. There will be a cup handed out to the winning team. Team captains need to fill out this survey, and communicate information to other team members.
Events
May 10: 5.1 Miles & 10.8 Miles 9 AM start for all races, 12:00 PM cut-off (~16:40 pace for 10.8 miles)
June 14 : 5K, 8.2 Miles & 14.5 Miles 9 AM start for all races, 1:00 PM cut-off (~16:35 pace for 14.5 miles)
July 12 : 5K, 10.8 Miles & 19.5 Miles 9 AM start for all race, 2:30 PM cut-off (~16:55 pace for 19.5 miles)
August 9: 5K, 14.5 Miles & 26.2 Miles 8:30 AM start for the 14.5 and 26.2, 9 AM start for the 5K, 4 PM cut-off (~17:10 pace for the marathon)
October 25 : 5K, 7.6 Mile Cross Country, 19.5 Miles & 50K 8 AM start for the 19.5 and 50K (7 AM early start will be available), 9 AM start for 7.6 Miles and Cross Country event, 9:30 AM start for 5K, 5 PM Cut-off (~17:25 pace for 50K, ~19:30 pace for early start)
Event-day registration is available starting at 7:00AM
Series: Short Series: May 5.1 Miles, June 8.2 Miles, July 10.8 Miles & August 14.5 Miles Long Series: May 10.8 Miles, June 14.5 Miles, July 19.5 Miles, August 26.2 Miles Top overall Man, Woman, and Nonbinary runners based on cumulative time will receive an award and free entry into next year's series.
Awards
Food & Drink