GPS Latitude and Longitude Coordinates for towns along the C&O Canal Trail and Great Allegheny Passage

Below are the GPS latitude and longitude values for the main towns along the trail. In most cases, the coordinates are for the town's trailhead location.

Town or Trailhead

Latitude

Longitude

Mile Marker

Georgetown - Washington

38.901855

-77.054930

0.0

Bethesda

38.970354

-77.153549

8.0

Potomac

38.998100

-77.248300

14.0

Seneca

39.070961

-77.341500

23.0

Poolesville

39.101558

-77.465630

34.5

Leesburg

39.110083

-77.553520

42.5

White's Ferry

39.139210

-77.515200

44.5

Dickerson

39.211569

-77.464981

41.0

Point of Rocks

39.273553

-77.540822

48.5

Brunswick

39.311556

-77.630486

55.0

Harpers Ferry

39.334563

-77.757454

69.5

Shepherdstown

39.436458

-77.803802

73.0

Sharpsburg

39.462306

-77.774620

77.0

Downsville

39.530617

-77.823550

87.5

Hagerstown

39.645618

-77.725868

100.0

Williamsport

39.599207

-77.826033

100.0

Fort Frederick

39.605540

-78.004690

112.5

Big Pool

39.624408

-78.017525

114.0

Hancock

39.698008

-78.181930

125.0

Berkeley Springs

39.626640

-78.231320

132.0

Little Orleans

39.617100

-78.395648

144.0

Paw Paw

39.538387

-78.455810

157.0

Town Creek

39.524601

-78.538814

162.5

Oldtown

39.538108

-78.612936

167.0

Cumberland

39.647733

-78.764076

185.0

Frostburg

39.659210

-78.921920

21.5

Meyersdale

39.816480

-79.020780

32.0

Garrett

39.861900

-79.063130

37.0

Rockwood

39.911020

-79.161330

44.0

Markleton

39.860460

-79.227310

50.0

Harnedsville

39.798490

-79.326520

59.0

Confluence

39.807340

-79.363090

61.5

Ohiopyle

39.869920

-79.492140

72.0

Connellsville

40.020180

-79.599750

90.5

Dawson

40.045140

-79.661890

95.0

Perryopolis

40.088690

-79.730130

102.0

Whitsett

40.107380

-79.755970

104.0

Smithton

40.157940

-79.746150

106.5

West Newton

40.211268

-79.770352

112.5

Sutersville

40.241834

-79.806200

118.0

Buena Vista

40.279710

-79.798234

121.0

Boston

40.310901

-79.827918

128.5

McKeesport

40.351150

-79.868940

133.0

Duquesne

40.373800

-79.844400

136.5

Homestead

40.413150

-79.911997

140.5

Pittsburgh

40.434756

-79.996960

148.0