From - http://comicbook.com/2016/07/31/how-the-new-nearby-tracker-works-in-pokemon-go/ While Niantic Labs didn't fix the problem, they did make things a bit easier on the player. While the original tracker showed Pokemon that were in a 100 meter radius, the updated tracker only shows Pokemon within a 70 meter radius. That means that the area you'd need to search to find a Pokemon has been reduced from a little over 31,000 square meters to about 15,300 square meters, shrinking your potential search area by over half. We're still testing the new nearby tracker out, but it also appears that the Pokemon are arranged in no particular order. The first Pokemon in the nearby tracker's window isn't necessarily the Pokemon that you're closest to. Take that observation with a grain of salt, though. It's not the fix that many players were hoping for, but the new nearby tracker may make things a bit easier on Pokemon Go players. We'll have to see if Niantic brings back the nearby tracker in a future update.