Let's make this birthday one to remember.

42 years old (Born on December 30, 1982)

Happy Birthday, Dathan Ritzenhein! Another year older and still running circles around everyone else—literally. You've conquered national cross country championships consecutively with such ease that we're starting to suspect you're secretly powered by rocket fuel instead of birthday cake.

From dominating races in your Nike gear under Alberto Salazar's watchful eye, you've shown us all what true endurance looks like. May this next lap around the sun bring you even more victories—and fewer blisters!

Keep inspiring runners everywhere; just remember: age is merely a number—but winning medals never gets old. Cheers to another speedy trip ahead!