During the weekend of January 25th through the 27th registered snowmobiles in Vermont, New Hampshire, and Maine can venture into each other's states free of charge.
However, all other host state regulations will apply; including speed limits, youth laws and Vermont's mandatory liability insurance. New Hampshire and Vermont began opening up their trails to the other in 2010. Maine joined last year after a law was passed in 2011.
Participating states plan to hold the snowmobile weekend each year on the fourth weekend in January.