Biathletes use rifles

Decathletes use javelins

Pentathletes use swords AND guns

So why are triathletes so unarmed?

Because the triathlon was created almost 100 years after the other sports, and despite the efforts of the nutjobs, the world is a less violent place.

Marathoners are unarmed.

Duathlons use bikes and run so that is one.

Maybe they will put canons on the bikes ?

Biathletes use rifles

Decathletes use javelins

Pentathletes use swords AND guns

So why are triathletes so unarmed?