There are a number of trails in an area called Town Forest within Simsbury. Below is a link to one of the trails and its map.
Town Forest Park: Orange Blazes, Blue Blazes, Yellow Blazes, White Blazes on AllTrails
https://www.alltrails.com/trail/us/connecticut/town-forest-park-orange-blazes-blue-blazes-yellow-blazes-white-blazes?p=-1&sh=sjkdim
These are some pretty nice evergreen Forest trails meaning they’re very nice even in the middle of the winter.