MONADNOCK REGION, N.H. (MyKeeneNow) As the 2025 snowmobiling season continues, New Hampshire officials are urging riders to stick to designated trails to prevent environmental damage, conflicts with landowners, and potential legal trouble.

With nearly 7,000 miles of marked snowmobile trails in the state, most of which cross private land, the New Hampshire Fish and Game Department says riders must respect property boundaries, according to a news release. Snowmobiling off marked trails without written landowner permission is illegal, even if a machine is built for deep powder riding.

“The issues associated with off-trail riding have become an increasing problem,” said Captain Mike Eastman of NH Fish and Game’s Law Enforcement Division. “There are now a growing number of complaints originating from landowners…”

Beyond trespassing concerns, going off-trail can have serious environmental consequences, the release said. Snowmobiles can damage young trees and reduce timber value for property owners, while also disturbing wildlife. Officials warn that deer and moose, already vulnerable during winter, experience increased stress when forced to move due to snowmobile activity.

Rescue operations have also become more frequent as riders venture into remote areas far from legal trails, placing additional strain on Fish and Game Conservation Officers. “We would like to eliminate this conduct before landowners close off all of their lands, including legal trails,” Eastman said.

Conservation officers will be patrolling trails and enforcing regulations throughout the season to ensure compliance. Riders are encouraged to familiarize themselves with snowmobiling laws and fines by visiting.