Write-up

Mahoning Shadow Trail
Line Name   surface  routes  total miles  gap  off_road  on_road  closed  unknown  other   
map Valier to Gresock St  Trail Open Surface Unspecified  mahoning,ne  4.0371    4.0371            
map Gresock Rd to Indiana St  Trail Open Surface Unspecified  mahoning,ne  3.3331    3.3331            
map Indiania St - Gilpen  Road Low Volume Asphalt  mahoning,ne  0.2057      0.2057          
map Gilpen to Graystone Court  Trail Open Surface Unspecified  mahoning,ne  0.5909    0.5909            
map Graystone Court to Skate Park  Road Low Volume Asphalt  mahoning,ne  0.4424      0.4424          
map State Park to PA36  Trail Open Surface Unspecified  mahoning,ne  2.0996    2.0996            
map Cloe - Rossiter Rd  Road Low Volume Asphalt  mahoning,ne  0.2125      0.2125          
map Cloe - Rossiter Rd to Winslow Rd  Trail Open Surface Unspecified  mahoning,ne  4.0507    4.0507            
           
Mahoning Shadow Trail  total for Trail    14.972    14.1114  0.8606          
           

Trail Lines are typically entered by tracing satellite imagery to extract latitude/longitude coordinates. The accuracy of these coordinates changes depending on the source of the photo and the precision of placement. I have seem satellite edges mismatched on the order 55 feet. Line work is sometimes extracted from the Open Street Map Project and from Strava heat maps.
>Milepost Known milepost (are placed on the map when they are visible in the satellite image or can be located via to visible features in the image. Other miles posts are extrapolated using calculations along the rail line. Note Railroads have also been known to realign trackage and not move existing mileage markers, only making an annotation on their paper maps.
Distances Above are based on the google map distance between two points along the line work.