Altitude adjustment with GPSVizualizer

If you record a track with your phone, GPS or GPS watch, recording altitudes is often a problem. In this video, I show you a pretty extreme case and how to fix the problem.

See also the faq for more details.

20Km with 3000m of climb gain in 2h, it’s probably a world record. Unfortunately the reality is that I am only a Sunday runner 🙂

Course Generator V4.0.0 (Stable)

Good news! After 2 years and a complete rewrite of the software (more than 30,000 lines of code), version 4.0.0 of Course Generator is available on the download page.

Main window

This version is multi-platform (Windows, MacOS and GNU/Linux), multi-language (currently French and English) and Open Source (project hosted on GitHub). More information here.

The Windows version contains an installer. For GNU/Linux and MacOS, it necessary to follow the procedure described in the download page.

I want to thanks Frédéric who has helped me and motivated me in recent months. He made it possible to have an English documentation and he  fixed many bugs.

I don’t forget all beta-testers who tested the first beta versions. Thank you.

I will end this post by reminding that this software is totally free. It is written during my free time and if you find that this software is super mega cool and that its author deserves a small reward then think about visiting the donations page.

Course Generator 4.00 beta 1

Finished Alpha versions I switch to the Beta. This means that there will be no new functionality.

The final version will be released when :

  • The documentation will be completed. For the moment you can refer to the documentation of version 3.88
  • The English translation will have been validated (translation and units)
  • The curved files in miles/h will have been created
  • The Windows Installer will be created

A single file

Good news, no need to manually install standard curves. At startup the application checks if the “default” curve is present on your system and if it’s not found it asks you if you want to install all the curves. Magic 🙂

Moreover, the program contains only one file:

  • “course_generator.exe” for Windows
  • “course_generator.jar” for MacOS and Linux

It is very handy if you are not administrator of your system.

The 2 files are available here:

Click the file you want. This will open a new page then click the “Download” button.


  1. Install this file where you want
  2. If necessary, create a shortcut that you add to your desktop or menu
  3. Run the program
  4. If this is the first time you are running Course Generator 4, answer “Yes” to the question about installing standard curves

As usual, I don’t do a lot of advertising around Course Generator. I rely on users to preach the good word.

So I’m counting on you …