Many snowmobile trails across the state are open some are in good condition and others in poor condition I don't think any are in excellent condidtion yet though. 

Some Marathon County trails opened on New Years Eve. The northeast zone includes trails north of Hwy 29 and east of I-39. Even though the trails are open they are in poor to fair condition so ride with caution. 

For updates on Marathon County trails, people may call the 24-hour snow condition hotline at 1-888-575-7669 or check the county’swebsite at www.co.marathon.wi.us.

Wood County snowmobile trail information can be found at http://www.co.wood.wi.us/Departments/Parks/Snowmobiling.aspx. As of right now only Kellner area trails are open.

If you have any other information on snowmobile conditions and open trails please comment below