According to Official Guinness Records,
The heaviest crayon weighs 681.29 kg (1,502 lb) and was achieved by Ashrita Furman (USA) in Jamaica, New York, USA, verified on 10 October 2017.Ashrita had friends to help build the crayon. The crayon measured 5.21 m (17 ft 1.1 in) long and 0.45 m ( 1 ft 5.7 in) in diameter.
For a complete list of 2017 records, please visit 2017 Guinness Records in United States.