The 2018 Spartan Death Race has literally made the history books when a Guinness Book of World Records record was set for crawling under barbed wire (more than seven miles in 12 hours).
There should be an footnote on the record: That the participants spent the night doing 3000 burpees (and before that rucking up and down a mountain and more).
Three thousand burpees. Not 30! Three thousand. Here are some images. (For pix of the entire event, go here.)