How modern pentathlon works

1. Five disciplines in one day: fencing, an obstacle race, swimming, laser shooting and running. Shooting and running are combined in the laser run, so there are four events.
2. In the fencing every athlete fences every other once with the épée; the first hit wins the bout. Then come the obstacle race and a 100-metre swim.
3. Points from those three events become a head start in the laser run: one point is one second. The leader starts first and the rest chase.
4. In the laser run athletes stop at the range to hit a target five times with a laser pistol, then run. The first across the finish line wins.

How long

Seniors run 3,000 metres in the laser run, in five legs of 600 metres, one after each shooting series.