Thingiverse user "snrk" aka Per from Sweden shared his method of converting .GPX data from a GPS in 3d printable files. He used Processing to with additional libraries to parse the files and translate the data to points in a voxel array.
Here is the example of 3d printed run data recorded on a GPS device in .gpx format:
Full instructions can be found here:
http://www.thingiverse.com/thing:276911
Here is the example of 3d printed run data recorded on a GPS device in .gpx format:
Full instructions can be found here:
http://www.thingiverse.com/thing:276911