Guinness World Records largest farm tractor on display in Kalispell Sean Wells/MTN News and last updated 2021-07-05 20:13:33-04 KALISPELL â The worldâs largest farm tractor -- according to the Guinness World Records -- is on display at the Flathead County Fairgrounds in Kalispell. Originally built in Havre in 1977, the tractor weighs a cool 95,000 pounds, sitting at 14 feet tall, 28 feet in length, and 25 feet wide. The tractor will be on display in the Trade Center Building until 7 p.m. Monday. Hear from the tractorâs co-owners Robert and Randy Williams and get an up-close look at the ginormous machine during Monday's 5:30 News on KPAX.