5 hours lol on first attempt, I managed 10 hours on my second attempt recorded it going to put it on my channel, I'll link to this thread in my vid desc.... might try it a few more times was a blast... totally intense, I'm still a bit of a noob at this game had no idea how fast they run totally caught me of guard in the first run, I did go a bit cheaty in the second attempt though made my guy athletic allows you make a little distance from them when they do get after you but it really didn't end up helping me much maybe added some seconds to my life.... anyways good times! awesome challenge.