You guys are crazy and under estimate the prowess of average human ability. You really think only one in a half million can break 2 in 800 with 5 years of training? The only reason your average high school team doesn't have more kids breaking 2 during senior year after 4 years of training is because they aren't hard enough. Kids nowadays suffer from pu5sy syndrome. If you can run a 400 in under 60, you should be able to break 4 you puss wad. A real man can hold his sprint speed for a marathon. The ancient olympic record in the 5k was 10 minutes. Pre could only manage 53 for a 400 but held 58,58,59,59 for a mile. And Pre was a known puss. Maybe you should man up and run some 60 second laps. I run a 12:26 5k and have a super model wife and make around 425k a year. Why? Cause I'm a real man who does X-fit.