A US soaring contest scoring system

About Winscore:

Winscore is a robust and easy to use Windows based scoring program for soaring contests in the US.  The scoring program is used at soaring contests to calculate contestant speeds, distances, scores, and to generate score sheets. The scoring program also can generate .zip files which contains the GPS flight traces (.igc files) and scoring information (.xml) for each contestant. These .zip files can then be put on a web page where Internet users can view a replay of the contestant's flights for that day.

Download Winscore:

Winscore Program (Win 8, Win 10):

Winscore Source Code

The Winscore source code and related files are available on GitHub. Feel free to download and review the code.



John Godfrey prepared a guide to automatic scoring with Winscore. Available here.


Winscore Version History:

Contest Scoring Program:


         Rev 2

o   Disabled better start warning

o   Check ACTIVE warnings when double-clicking a flight

o   Added more info in invalid turn area turnpoint specification

o   Fixed file open failure when .wscx file is on google drive folder

         Rev 1

o   Removed FAI Task handicap normalization.


         Beta 0

o   No change from 2023 Rev 5




         Rev 5

o   Added PEV Starts

o   Enabled base altitude for line finishes

         Rev 4

o   Added informational message for motor runs before starts

         Rev 3

o   Fixed handicapping distance computation for FAI tasks.

         Rev 2

o   Changed motor detection tolerance to reduce false alarms

o   Added 1s fix interval check for FAI tasks.

o   Added altitude and speed start checks for FAI tasks.

         Rev 1

o   Initial version for 2023. Minor changes from previous year.


Winscore Support:

Support of the scoring and viewing programs is provided by the author, Guy Byars.

The best way to contact him is via email:

For critical support issues, Guy's cell phone is: 513-307-1484

In your initial mail message to Guy, please include a complete description of your problem and also attach the Winscore data file (.wscx) to the email. If you are having problem with the evaluation of a flight log, you should also attach the IGC file for the flight in question.  Including this information with your initial email will speed up your support.