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C&O Canal / Great Allegheny Passage Guide: Maps, Services, Events, and More

About the C&O Canal Trail

The C&O Canal Towpath trail runs 185 miles along the Potomac River, from Washington DC to Cumberland Maryland.  These tools will help you plan your next cycling, hiking, running, or canoeing trip along the C&O Canal or the Great Allegheny Passage.

About the Great Allegheny Passage

The Great Allegheny Passage (GAP) trail runs 150 miles through the heart of Pennsylvania, from the Point Park in downtown Pittsburgh to Cumberland Maryland.  There it connects to the 185 mile long C&O Canal Trail. 

Together, the GAP and C&O add up to over 300 miles of blissful trail!  Both trails are included in this website's tools to help you plan your next adventure along the Great Allegheny Passage, the C&O, or both.
Click to Enlarge
Blue heron near Georgetown, by Mark Pankin
Blue heron near Georgetown Photo: Mark Pankin

C&O Canal Towpath and Great Allegheny Passage Resources

An interactive MAP of the C&O Canal Towpath & Great Allegheny Passage
BUSINESSES and SERVICES along the trails
An interactive TRIP PLANNER provides details specific to your trip
EVENTS on and around the C&O Towpath and GAP
Discuss the trails on the COMMENT FORUM
BED & BREAKFASTS along the trail
Journals and TRIP REPORTS from others' C&O / GAP travels
C&O and GAP MERCHANDISE - shirts and stickers
PHOTOS of the C&O and GAP
ELEVATION (altitude) of towns along the trails
WEATHER along the trails: [ GAP ] [ C&O ]
LINKS to other useful websites

C&O Canal Trail Conditions

C&O Trail conditions from the National Parks Service website:

3/24/2015 - There are no trail closures at this time

- National Parks Service

If you are aware of any adverse trail conditions on the C&O, please let us know the specifics, or contact the National Parks Service.
We suggest that you also check the forum for any recent trail condition updates.

Great Allegheny Passage Trail Conditions

GAP Trail conditions from the Allegheny Trail Alliance website:


The Pinkerton Tunnel is OPEN - thank you to everyone that helped with this extraordinary project!

The Pinkerton Low Bridge (near mile 52) will be closed intermittently to restore the railing and deck. Closures will not be long, 15 to 30 minutes.

Good time for a water break and opportunity to watch the finishing touches of the Pinkerton Tunnel project!


Big Savage Tunnel
Last updated on: 04/08/2015


The 3,300 ft. long Big Savage Tunnel, near the Mason-Dixon Line, is lighted and is opened during trail season. The tunnel is generally closed for the winter from early December to early April. Please check this site for updates.
Brush & Borden Tunnels, MD
Last updated on: 08/08/2015

The Brush Tunnel is open and lighted.

The Borden tunnel is NOT lighted - For your safety, PLEASE DISMOUNT & WALK through this tunnel.
Montour Trail
Last updated on: 04/08/2015

For complete details on all construction notices for the Montour Trail please Visit the Website
Ohiopyle State Park
Last updated on: 04/08/2015

Updates and photos of the new Visitors Center are available on ‘Ohiopyle State Park’ Facebook page.
Pinkerton Tunnel
Last updated on: 04/08/2015

Help us open the Pinkerton Tunnel!

Great Allegheny Passage currently takes a 1.5 mile detour around a deteriorated railroad tunnel, near mile 52 in Somerset County. Besides shortening the distance, fixing the tunnel will create another spectacular feature along the trail. Located between the Pinkerton Low and High Bridges, the "bridge-tunnel-bridge" in quick succession will be a marvel. It will also make a great way to create a loop ride, using the tunnel and the detour trail.

Please donate now to the "Passage thru Pinkerton" to contribute online, click here.

Or send your tax-deductible contribution to:
Somerset County Rails-to-Trails Association
attention: Pinkerton
P. O. Box 413
Somerset, PA 15501

Gifts of over $500 will be acknowledged on a plaque at the tunnel.

The opportunity is here. Let's open up the old WM Pinkerton Tunnel!
Point State Park
Last updated on: 04/08/2015

Restoration of Point State Park was rededication on June 7, 2013. Trail users will be happy to know the connection across the Allegheny River along the Fort Duquesne Bridge is now open. Biking is permissible around the lower riverfront promenade. Visit the Point State Park renovation web page for details.

The Hot Metal Bridge is opened for pedestrian/bike use.
Three Rivers Heritage Section
Last updated on: 08/08/2015

PITTSBURGH, PA: *To get answers to specific questions concerning the Three Rivers Heritage Trail detours, please join one of their Social Network sites: Visit the Website
- Allegheny Trail Alliance

If you are aware of any adverse trail conditions on the GAP, please let us know the specifics, or contact the Allegheny Trail Alliance.
We suggest that you also check the forum for any recent trail condition updates.

Let us know if there's anything we can do to improve this website!

Proud Member Of:

C and O Canal Association
C&O Canal Association
Adventure Cycling Rails to Trails Conservancy

C&O and GAP Merchandise

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