"Trails" has all the expected hallmarks of a Broadway Rose production: A surprisingly expansive set, given the intimacy of the theatre, a top-notch cast, and a solid band. What was unexpected was the subject-matter, which was a shade or two darker than their typical fare. It is a welcome change. That said, my only real quibble with "Trails" lies in the script's tendency to "tease" the tragedy at its center just a bit too much. Hinting at it and then trailing-off begins to grate after a while.
The "trail" of the title is the Appalachian Trail. Two childhood friends walk it on a journey of self-discovery. They confront aging, ("Thirty-four is halfway to sixty-eight") and old rivalries and resentments, culminating a little late in the aforementioned tragedy.
All in all, I would recommend "Trails," but again, be warned, and/or excited by its unusualness.