How Old Clark Is At The Beginning & End Of Smallville

The Superman prequel series Smallville shows a large portion of the life of Clark Kent before becoming Superman. Smallville first began airing in the fall of 2001, following the story of a teenage Clark Kent (Tom Welling) growing up on a farm in his hometown of Smallville, Kansas. As Smallville progresses, it ventures more into Clark's adult life, with the show's 10th season concluding with Clark fully becoming Superman.
Smallville remains a highly beloved re-telling of Superman's origin story, and Welling's acclaimed portrayal of Clark Kent encompasses an expansive journey of Clark's trials and tribulations as a hero. Due to Smallville's most important rule of "No flights, no tights" until its final episode, the show also centers on a somewhat more youthful depiction of Clark Kent than most adaptations. While Clark's exact age is not revealed on Smallville, the timeline of the show makes it relatively easy to logically infer.