Baltimore to Philadelphia

East Coast Greenway has their route on Google!

For MD:
https://maps.google.com/maps?f=q&hl=en&sll=37.0625,-95.677068&sspn=73.963864,94.746094&q=https://greenway.org/maps/googlemapdata/ECG-MD-DC3.kml&ie=UTF8
For DE:
https://maps.google.com/maps?f=q&hl=en&sll=40,-75&sspn=0.284599,0.615234&q=https://greenway.org/maps/googlemapdata/ECG-DE4.kml&ie=UTF8
For PA:
https://maps.google.com/maps?f=q&hl=en&sll=40,-75&sspn=0.284599,0.615234&q=https://greenway.org/maps/googlemapdata/ECG-PA2.kml&ie=UTF8
Google map links for other states: https://www.greenway.org/maps/googlemaps.htm
Home page: https://greenway.org/
oldId.2007111309351127