G'day all
I found a tool to convert GPS log files...
www.gpsbabel.org/download.html
It can convert between 100's of GPS file formats quickly and relatively easily.
Great if (like me) you forgot to turn your GPS off for the drive home, reaching 100kts VMAX.
Convert to GPX format, edit the XML file in notepad and delete a few hundred/thousand of the last points, then load to KA72.com. Simplz.

I've made that rookie mistake. The other bummer was that I had to delete the personal bests off the device.
Been using GPS-Babel since 2004. ![]()
But it's easier to delete a driving section in the free version of RealSpeed and certainly in the paid versions of GPS-Results and GPSAR-Pro.
Probably the free GPSAR as well but I have not played with that for a very long time so I forget. ![]()
There are probably others too.
Also, not a good idea to use NMEA data or convert data to GPX as you lose the Doppler error values. No permitted in GPS-Teamchallenge posting.