In biathlon there are 4 formats for races:
- Mass start (12.5km for women and 15km for men)
- Individual (15km for women and 20km for men)
- Sprint (7.5km for women and 10km for men)
- Pursuit (10km for women and 12.5km for men)
In the mass start format the athletes start all together.
In the sprint and individual formats the athletes start every 30 seconds.
In the pursuit format the athletes start with the delay accumulated from the sprint.
So sprint and individual both seem to be "individual" events and I do not understand why the shortest is called "sprint" and the longer "individual".