Great fall conference for http://ihearttrails.org/ [1] - I learned that Ohio has a 110 mile trail that runs through four counties http://www.eastgatecog.org/GOLTRG.aspx [2] (not the Ohio and Erie Canal towpath) - and met folks who have volunteered for years to make and keep trails, like the Rachel Carson Trail [3] accessible to the public.
Links:
[1] http://ihearttrails.org/
[2] http://www.eastgatecog.org/GOLTRG.aspx
[3] http://www.rachelcarsontrails.org/rct