I completed the 4x4x48 Challenge, running 4 miles every 4 hours for 48 hours — a brutal endurance test created by David Goggins. In this video I document how I survived the sleep deprivation, fatigue, and mental battle of running through it all. This is a very RAW cut. I know it's long, but I wanted to include as much of my thought process before and after each run as possible. Let me know if you guys like this style. If you're into marathon training, endurance challenges, and mental toughness, this one’s for you. #4x4x48 #DavidGoggins #RunningChallenge #EnduranceTraining #MarathonTraining #MentalToughness #StayHard #running #runner #runningvideos #runningvlog 00:00-03:14 Leg 1 03:15-05:35 Leg 2 05:36-09:26 Leg 3 09:27-12:10 Leg 4 12:11-15:51 Leg 5 15:52-18:55 Leg 6 18:56-20:54 Leg 7 20:55-23:19 Leg 8 23:20-26:01 Leg 9 26:02-27:12 Leg 10 27:13-32:09 Leg 11 32:10-35:22 Leg 12 Running, Runner, RunTok, Running Videos, Running Challenge, Running Vlog, Marathon, Marathon Training, Half...