Southeast of Lebanon and west of North Grantham, there is an extensive network of groomed snowmobile trails. These trails are maintained by the Blue Mountain SnowDusters Club.
The snowmobiling trailhead for the Grantham Snowmobile Trails is located west of North Grantham at the end of Walker Road. To reach the trailhead from the intersection of US 4 and I-89 in Lebanon, go south on I-89 for 6 miles to exit 14. Exit the interstate and go south on SR 10 for 3.4 miles. Turn right (going under the interstate) on Olde Farm Rd. Continue to follow Olde Farm Rd. for .75 miles to a left on Walker Rd. Go about 1.5 miles to the end of Walker Rd. Park here.
While snowmobiling Grantham, all snowmobiles must have a New Hampshire OHRV registration decal. To obtain a NH OHRV registration decal, you will need to show proof of member ship in a New Hampshire snowmobile club, such as the Blue Mountain SnowDusters Club.
Overall, Grantham is the 19th most popular snowmobile trail of all 31 snowmobiling in New Hampshire.