GPX visible in conversion tool and in MyTracks Detail but not onto map

General talk
1

I’m a complete newby on OpenStreetMap.

I have to print a map in which is highligheted a marathon through woods. I have KMZ files created in GoogleEarth by a user and I converted it in GPS using suggested url (http://www.gpsvisualizer.com/convert_input?convert_format=gpx)

I succesfully uploaded this GPX and I’m able to see its details in my traces area but, clickin on “map” link it does not show anything.

If I try from conversion tool (this page http://www.gpsvisualizer.com/convert?output) to display converted GPX into GoogleMaps for example, visualization is perfect.

So, why is not visible in OpenStreetMap?

Thanks