That photo is from Prospect Park in Brooklyn. 3.3 mile loop. I've raced there since 1993. The only time I have ever seen any 'lapping' there was when Morgan Stebbins and his breakaway companion lapped the 35+ field one Saturday back in 1995 or so. In order to accomplish that, assuming an average speed of 25mph, you would have to acheive an 8+ minute gap in a 40 mile race. And that's why I only saw it once in all those years.