He laughed.
After around 2,300 miles to cover the just over 1,500 miles of road and trails, he found that pretty funny. "You know, lol, that wasn't included in the [Venango] County miles, that was just something arbitrary I set for my total miles today," he wrote later in a Facebook message.
To read more about his journey, visit this page that has a story and pictures first published a couple weeks back.
Later on Friday, Kosker paid homage to his accomplishment by posting to social media "I'm pretty tired, I think I'll go home now," - Forrest Gump.