Donald Trump and Hillary Clinton's health records have been the subject of much media attention in recent days.

At 70 and 68 years of age respectively, the two are no longer spring chickens, and many wonder if they're up to the physical demands of the presidency.

But if physical fitness is indeed a qualification for the highest office in the land, it appears Libertarian presidential candidate Gary Johnson would have both Clinton and Trump beat by a mile – literally.

Johnson, 63, has a very impressive fitness record, according to Men's Health.

He has completed four Ironman World Championship races, climbed Mount Everest – along with all the other highest mountains on all seven continents – and run 17 marathons in his lifetime, posting a personal best of 2 hours and 47 minutes.

For comparison, P90X macho man and Speaker of the House Paul Ryan's fastest marathon time is 4 hours and 1 minute.

Though Johnson is a long shot for the White House – he is currently polling at an average of around 8 percent – he knows he has his opponents beat in the health department.