I've ran it both years and yes, you actually finish on the 50. They have people try to keep you moving across field and exiting through the SW tunnel but there is plenty of time to grab some pics and take in the feeling. Awesome feeling being down on the field and looking up into stands imagining 100k cheering you on.
Also, some advice...if you do want pics on the field you have to run with your phone because gear check is outside shoe and they will not let you re-enter once you walk out SW tunnel. Good Luck!