→ Google v3 map (May,2013) should work with IE 9+, firefox, chrome, or safari

Enter street,city,state or zip code or lat,-lon (dd.ddd)
     (for lat/lon or UTM or NAD27 use this)
Distance buttons: click on map to make a track

this button will popup a window from which you can save the track as a file.gpx for uploading to your GPS.
   Plot track elevation profile -- google elevations (10m DEM) and area
   Plot track elevation profile -- courtesy of heywhatsthat.com (30m SRTM)
Add TN county lines to map:

Other Google maps     arches     falls     GSMNP     BSF     towers     county highpoints     AT shelters     Oak Ridge greenways
USGS name search and USGS quad maps tiffs or new USGS quad maps (pdf)

Tennessee     landforms     arches     waterfalls     rocks     peaks     balds     sinks     lakes     regions     county
    GSMNP landforms (TN/NC)     BSF landforms (TN/KY)