Lael Wilcox cycled 29,169 km (18,125 miles) from Chicago to her destination in 108 days, 12 hours, and 12 minutes.
She surpassed the Scottish traveler Jenny Graham’s record from 2018, which stood at 124 days and 11 hours.
Alaskan Wilcox, 38, left on May 28 and traveled through 21 nations on four continents before returning to Chicago on Wednesday at roughly 21:00 local time (02:00 GMT).
Her voyage, which will now be confirmed for inclusion in the Guinness Book of World Records, involved up to 14 hours of cycling per day.
According to experts, ultra-endurance bikers can burn between 6,000 and 10,000 calories each day while riding their bikes.
“She just has such incredible physical stamina, mental toughness, and just sheer determination to go out and do these extreme efforts,” Cycling Weekly magazine’s North America editor, Anne-Marije Rook, stated.
“It’s just a tremendous effort to be able to do that day in and day out for 108 days straight.”
The TransAm, a 4,000-mile event that spans the whole US, was won by Wilcox, the first female racer. She has also broken records in the Tour split, an intense event that follows the Rocky Mountains and the American continental split.
Although her most recent record is described as a “ride around the world,” Guinness regulations only call for cyclists to it.
