Osseo Trail is a 10.5 mile moderately trafficked out and back trail located near Lincoln, NH that features a river and is rated as moderate. The trail offers a number of activity options and is accessible year-round.
We liked this trail but only did it in the descending direction at the end of our Pemi loop. The switchbacks made the descent easier than we expected and the trail seems to be quite well-kept. There are many ladder steps in the steeper parts which was great for the knees going down but are probably pretty tiring going up. We were surprised by the easy footing along this whole trail.
The brook is beautiful and the views from Flume are really nice. The trees seem to be growing up and obscuring the views into the Pemi Wilderness a little bit but you can still see a lot! It seemed like this trail would be a nice fall hike when the birches and maples have changed colors.
This is a great trail that leads to Mount Flume. It has a lot of switchbacks which makes it a fairly easy hike. Don't get me wrong, there are definitely some steep parts! Towards the end of the trail to Mt. Flume, there are wooden stairs which can be very steep so be careful! You get some sneak peeks of what the view looks like while you're hiking up but it is surely a surprise when you get up there. I recommend continuing onto the Franconia Ridge Trail after Flume and hiking up to Mount Liberty. Liberty has better 360 degree views. I also recommend staying at the Liberty Springs Tentsite just past Liberty as this can be a long hike one way.