Events Calendar Donate Volunteer Renew/Join Shop Upcoming Events Visit Meetup for more events Visit our Chapters page for more events Subscribe to our Calendar September 2026 Sun Mon Tue Wed Thu Fri Sat 30 31 1 Vigorous Hikers 2 3 Billy Goat B and C: a 6-Mile Moderate Hike 4 5 6 7 8 Vigorous Hikers 9 10 Riverbend Park to Great Falls Loop, a moderate 4.8 mile hike 11 12 REI DC's National Public Lands Day Store Event PATC Outreach Event at Frederick's "In the Streets" festival 13 14 5:30pm New Member Meeting (Virtual) 15 Vigorous Hikers 16 17 18 19 Rock Creek Park Trail Work 20 Rosaryville State Park: A Moderate 9.4 Mile Hike 21 22 Vigorous Hikers 23 Great Falls Loop from Angler's Inn - 5.7 miles 24 25 26 Cadillac Trail Crew Overnight Work Trip Flying McLeods Work trip PATC outreach event at Middletown's Heritage Festival Energy & Environment Policy Org Hike Show all 27 28 29 Vigorous Hikers 30 1 2 PATC CentennialFest 3 PATC outreach - Brunswick Railroad Days PATC CentennialFest Submit an Event Name: Email: Event Name Event Date: Description of Event (Include time + contact info) Contact Info Thank you for submitting your event. We will review your submission and add it to our caland