3. That's why it's called a TRIathlon
Seven
7: Freestyle leg in the medley relay, 200 free, 50 free, 200 free relay, 100 free, 500 free, 400 free relay
How many events are there in 'free style' swimming competition
Freestyle event distances in the Olympics are: 50 meters 100 meters 200 meters 400 meters 800 meters (women only) 1,500 meters (men only)