American runner Dylan Bowman smashed the record in the 100km Tarawera Ultramarathon today, finishing in a time of 7hr 44min 58sec.
That time was about 45 minutes quicker than the previous record set by former Rotorua Marathon champion, and Tarawera Ultra champion, Sam Wreford in 2011.
Meanwhile, Napier's Ruby Muir also broke the women's record today, winning in just over nine hours.
Muir, who has won the event before, shaved more than an hour off the old record.
Both runners were greeted by a haka after crossing the finish line at Firmin Field in Kawerau.