The Rock County snowmobile trails are closed after the best run in three years.
Rock County Snowmobile Alliance Trail Coordinator Billy Slater says the trails were open for a total of 10 days.
Slater this this past weekend they were able to open up trail 40 between Milton and Whitewater, which only happens every few years.
With the warming temperatures, and the snow turning to slush, the trails closed Tuesday morning.
