The triathlon has got to be one of the most grueling sports you can imagine. Olympic athletes at Rio 2016 will start their race with a 1.5 km (0.93 mi) swim, followed by a 43 km (27 mi) cycle, and a 10 km (6.2 mi) run. Winners will enjoy a medal ceremony, losers will enjoy a long rest in bed the following day!

Traithlon clip video

Have a look at this short series of clips to see what triathletes go through as they try to become the best on the planet. Swimming, cycling and running themselves into exhaustion!

Have a comment or suggestion?