As indicated by the prefix penta-, there are five events in a pentathlon.
In the old days, a pentathlon.
A Pentathlon has 5 event and a Heptathlon has 8 events :)
In the modern day pentathlon, there is fencing, swimming, running, shooting, and riding.
There are five sports in a pentathlon. The modern-day pentathlon has events in shooting, swimming, fencing, equestrian and cross country running.
Events in a pentathlon.