New Zealand ultramarathoner Kim Allan set a world record for the longest continuous run without sleep on Sunday. In 86 hours, 11 minutes, and 9 seconds, she completed 310 miles (500 kilometers) in Auckland, New Zealand. The 47-year-old completed 332 laps around the Auckland Domain, a park that offers only slightly less than a mile (1.5 kilometers) per lap.

Allan reportedly overcame severe blisters and digestive problem 117 miles into her run. Co-manager Mark Gray cut off the top part of her shoes to alleviate the friction.

When Allan eclipsed the previous record held by American Pam Reed, who ran 301 miles (486 km) in 2005 in about 80 hours, supporters remained silent out of concern that Allan would stop short of 310 miles if she knew she had already set the record.

"We didn't want her to give her an excuse to stop," supporter Michael Rodliffe told The New Zealand Herald during Allan's run. "In two hours time when she's finished the 500 [kilometers], we'll celebrate."

In 2005, Dean Karnazes ran 350 miles (560 km) in 80 hours and 44 minutes without sleep.