Here is a photo of a young Lance Armstrong in high school at Plano East High School during a cross country meet.
Armstrong has run three marathons (NY twice, Boston once) during his first retirement from cycling. His marathon PR is 2:46:43. He has also competed in several triathlons as well during his athletic career.
I am not sure if Lance was a high school cross country champ but with his drive and genetic disposition it’s a pretty safe assumption.
And on yeah, this young lad, in the photo above, has won cycling’s prestigious Tour de France seven times.