There's just something about half way. That moment of realization that path ahead is just as short as the path behind, and that you don't have to do any more than you've already done. Now that can manifest poorly (midlife crisis) or positively (second half comeback). But here, when all there's only freedom at the end, the halfway mark is motivation to keep going. A "you got this!" yelled from the crowd. A cup of electrolytes extended to you from an encouraging arm.
Wednesday is a weekly manifestation of a grey haired elder saying, "trouble don't last always."