Uhm, in Triangle myself.
will answer at length but had to reference the various greenways that are in the area...
The Neuse River GreenWay..
Neuse River Greenway | Neuse River Greenwat Trail
https://www.raleighnc.gov/parks/cont...ailSystem.html
The Tobacco Trail is nice...
http://www.triangletrails.org/pdfs/A...ge2-edited.pdf
There's a few smaller greenways...
The trails in Umstead are manageable, too!