This is the sixth year The Summit Project has led the trek, which stopped over for lunch at Dysart's in Hermon, on their way up from Portland.
Gold Star families donate a stone that is then carried on a hike, this year to Rainbow Lake near Baxter State Park.
The stones represent post 9/11 heroes from all service branches.
And after the trek, the person who carried the stone writes a letter to the Gold Star family to tell them about the experience.
"We know that The Summit Project means something different for different people in different ways," said David Cote, the founder of the project. "What we try to do is serve our three populations, the fallen, the families, and the living faithful. We do that by this learn, launch, letter model."
The stones are kept in Portland and can be taken on more informal hikes, like with a school group or business.
To learn more, you can visit The Summit Project's Facebook page.