It's tough enough to be accomplished at one sport, let alone three.
"I enjoy the training, to me it becomes almost addictive," described Allentown Police Officer Matthew Diehl. "It's just a constant competition within yourself, to see what your made of, to see what you have."
For the last four years Diehl has been racing in triathlons.
"A triathlon consists of three events, it's a swim, a bike and run."
To be ready for such a grueling event, Diehl puts in allot of hours training on top of his 40 hour work week.
"Typical workout week is 15 to 20 hours a week when I'm working," he explained.
Last summer Diehl qualified to be a part of Team USA, and all his energy is focused on preparing for the International Triathlon Union's World Championships in London next month. He'll be racing against other age group athletes.
"Age group means we're not professionals, we're amateurs," shared Diehl. "You typically have to balance your personal life, your work life, all that stuff and training."
In six weeks Diehl will wear USA's colors competing against athletes from more than 50 countries in the sprint triathlon world championships.
"750 meter swim, a 20 kilometer bike and a 5 kilometer run," he said. "In that order."
The sweat he's putting in now will hopefully mean glory on race day.
"I'm just looking to put in a solid effort a solid race and just enjoy the experience," smiled Diehl.