Fastest modified/prototype snowmobile

According to Official Guinness Records,

The speed record for the fastest snowmobile is 277.13 km/h (172.2 mph) and was achieved by Chris Hanson (USA) on Lake Nipissing in North Bay, Ontario, Canada on 13 March 2004.

For a complete list of 2004 records, please visit 2004 Guinness Records in United States.

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