I am 100% sure that it was in the past 2 Olympics but not the most recent in 2016. The sport was about running but there is a twist that a competitor has to complete other tasks like shooting, swimming and other stuff in a single race.
A team who managed to do everything first are winners. What sport could this have been?
I think you're describing the modern pentathlon. Running, shooting, and swimming are three of the five events it contains - the other two are fencing and show-jumping.
The modern pentathlon is an Olympic sport that comprises five different events; fencing (one-touch épée), freestyle swimming (200 m), equestrian show jumping (15 jumps), and a final combined event of pistol shooting and cross country running (3200 m).
- Wikipedia
