The content originally appeared on: CNN CNN - Australian Erchana Murray-Bartlett completed 150 marathons in 150 days, running 6,300 kilometers (3,900 miles) from the country's northern tip to the southern city of Melbourne in what could be a new world record. The 32-year-old runner crossed the finish line on Monday after a feat that, if confirmed, will beat the previous world record of 106 consecutive marathons set by British national Kate Jayden last year. CNN has reached out to Guinness […]