As I noted in the Trip Reports forum, I through hiked the the Cohos Trail over the first couple weeks of July.
See
http://www.trailjournals.com/journal/entry/542267 for my journal and
http://www.cookhimes.us/dennis/traillog/ct/ct000.htm for a picture gallery on my own site.
Quick summary: South of Stark it's mostly (but not entirely) well worn WMNF trail. North of there there's a big variety, a lot of nice well maintained forest paths, a lot of snowmobile/ATV trails, which can range from hard packed dirt to grass covered mud, and a fair amount of road walking. In fact, from Coleman SP to Lake Francis Trail there's a day and a half of road walking.
I found the forest trails to be surprisingly well signed and blazed. Elsewhere with a combination of the map, the data book, and a few strategic signs and blazes I was able to figure out where to go. I only had serious problems three times. Twice between Panorama Shelter and Coleman SP when I hit recent logging areas. Presumably the logging had destroyed some blazes. The other time was when a turn off of a snowmobile trail into the woods wasn't obvious to me somewhere in the approach to Mt. Cowell.
I think it's a great trail, in spite of a few horrible sections (e.g. Col. Whipple Trail). It was definitely a different experience from through hiking the Long Trail, which I did a few years ago.
--
Cumulus
NE111 in my 50s: 115/115 (67/67, 46/46, 2/2)
NE111 in my 60s: 54/115 (42/67, 11/46, 1/2)
NEFF: 50/50; Cat35: 39/39; WNH4K: 40/48; NEHH 88/100
LT NB 2009; CT NB 2017
"I don't much care where [I get to] --" said Alice, "-- so long as I get somewhere," ...
"Oh, you're sure to do that," said the Cat, "if you only walk long enough."
- Lewis Carroll