According to Official Guinness Records,
The fastest half marathon dressed as a vegetable was 1 hr 16 min 1 sec, and was achieved by Jack Rising (USA) at the Eugene Holiday Half Marathon in Eugene, Oregon, USA on 16 December 2017. Jack, who is diabetic, made his record-breaking attempt to raise money and awareness for Juvenile Diabetes Research Foundation (JDRF) and inspire other people with diabetes to participate in athletics.
For a complete list of 2017 records, please visit 2017 Guinness Records in United States.