Brooks Trailhead Run Group Every Thursday at 6:00 PM; Every Tuesday at 6:00 PM
Cascade Orienteering Club About monthly, on varying days and parks; next: Sat Oct 17 at Green River College (Auburn), Sun Nov 1 at Shoreview Park (Shoreline), Sun Dec 27 at Lord Hill Regional Park (Snohomish).; Wednesday evenings in late spring and summer at a different park each time; start any time between 5:00 and 7:00 PM.
Club Northwest Every Sunday at 7:30 AM; Every Tuesday at 7:00 PM
Cowgill Trail Collective Every Thursday at 6:30 PM; Every Thursday at 6:30 AM
Eastside Runners Club Every Saturday at 8:30 AM; Every Thursday at 5:30 PM
Fleet Feet Seattle Every Thursday at 6:30 PM; Every Tuesday at 6:00 PM
Fort Ward parkrun Every Saturday at 9:00 AM
Gearhouse Community Events Every Tuesday at 6:00 PM; Every Sunday at 9:30 AM
Issaquah Alps Trails Club Guided hikes on varying days at different Issaquah Alps trailheads; dates and sign-up links on the Hikes and Events page.; Remaining October 2026 dates: Tue Oct 13 at 2:00 PM, Tue Oct 20 at 2:00 PM, Tue Oct 27 at 10:00 AM.
Mountains to Sound Greenway Trust Several volunteer events a week on varying days and sites (planting, trail maintenance); dates and sign-up on the events calendar.
Outdoor Afro Seattle Times on their site
Outdoors for All Series-based hikes, usually in the fall, mostly on wide, firm trails along the I-90 corridor; dates and sign-up in the online registration portal.; Lessons January to March at The Summit at Snoqualmie and Stevens Pass; winter registration opens October 27, 2026.
Over 40 Single Hikers and Adventurers Several events a month on varying days and places (hikes, urban walks, concerts, social nights); dates on Meetup.
Pacific Northwest Hiking & Adventure Group Occasional kayaking trips and urban hikes from spring to early fall; dates on Meetup.
Redmond Central Connector Trail parkrun Every Saturday at 9:00 AM
Renton parkrun Every Saturday at 9:00 AM
Seattle Green Lake Running Group Every Saturday at 9:00 AM; Every Thursday at 6:30 PM
Seattle Hiking and Professional Networking Group Hikes most weekends, usually leaving early in the morning; dates on Meetup, meeting place shown to members only.
Seattle Hiking Community Several weekend hikes a month; most meet at 7am at Wilburton Park and Ride in Bellevue to carpool, some at Green Lake Park and Ride or the trailhead. Dates on Meetup.
Seattle Outdoor Adventurers Every Wednesday at 5:00 PM, Series runs until November 25, 2026; Every Thursday at 6:00 PM
Seattle Running Club Every Monday at 6:00 PM; Every Sunday at 8:00 AM
Seattle Stair Walkers Stair walks most weekends, usually 8:00 AM on Saturday or Sunday, plus some weekday mornings; a different route and start each time. Dates on Meetup.
Seattle Transit Hikers Two to five hikes a month (July to October 2026), mostly on weekends, at varying times; each starts at a transit stop or station, often South Bellevue Station. Dates on Meetup.
Tenderfoot Adventures (55+) Every Sunday at 7:00 AM; Every Thursday at 8:00 AM
The Mountaineers Monthly info session for newcomers, some in person at the Seattle Program Center and some on Zoom; dates on the Meet The Mountaineers page.
TrailMixed Second tuesday and fourth wednesday of the month at 6:00 PM
Washington Alpine Club Monthly social evening; the day and brewery change (October: Thu Oct 15, 2026, 6 to 9 pm at Formula Brewing; November: Nov 13, venue to be announced).; Second Monday of the month at 6:00 PM
Washington Trails Association Wednesdays to Fridays in October 2026 (Oct 14 to 16, 21 to 23, 28 to 30), 8:30 am to 3:30 pm; sign up for each date on the work party schedule.; Work parties on most days at trails around the state (e.g. Grand Ridge Park in Issaquah, Wallace Falls State Park); new dates go up 4 to 6 weeks ahead.
Winter Backpacking About two trips a month, usually on weekends and mostly one night; most leave at 6:00 AM from a park and ride that changes by trip. Dates on Meetup.

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