A Vermont high school senior unofficially broke a Guinness World Record by walking nearly 640 feet on a tightrope while wearing 4-inch heels.

Ariana Wunderle climbed onto the 6-foot-high tightrope in the school’s gym and walked across the rope 52 times for a total distance of nearly 640 feet.

The current Guinness World Record for farthest tightrope walk in high heels stands at 49.2 feet and was set by Russian performer Oxana Seroshtan in 2014.

Evidence from Ariana’s record attempt is being submitted to the record-keeping organization for official recognition.