---
name: "Cougar Mountain Trail Series"
status: notviable
platform: RunSignUp (registration only)
url: https://cougar.seattlerunningclub.org/
tags: []
firstSeen: 2026-08-15
lastChecked: 2026-08-15
---

Recurring annual trail race series (23rd running in 2026) run by the Seattle
Running Club — 2nd Saturday of May/June/July/August plus a fall race on the
last Saturday of October, at the Sky Country Trailhead in Cougar Mountain
Regional Wildland Park.

Investigated 2026-08-15: the trailhead/park is in unincorporated King
County near Bellevue/Issaquah, not Seattle — outside the "Seattle proper"
bar in `skills/source-discovery/SKILL.md` step 4.1 ("Venues entirely outside
Seattle... are not appropriate"). Registration is via RunSignUp with no
public ICS/API found. Not viable primarily on the Seattle-focus criterion;
the Seattle Running Club's own in-Seattle public event (Thursday social run
at Garfield Community Center) is already covered — see
`docs/source-candidates/seattle-running-club.md`
(`sources/recurring/seattle-running-club-thursday-social-run.yaml`).
