Critical reception

Owen Gleiberman wrote in Variety, "At three hours and 58 minutes, it has the sprawl and generosity of a good Dead show, yet there’s nothing indulgent about it – it's an ardent piece of documentary classicism.... Deadheads will drink it in and debate it, poring over every detail it works in and leaves out, yet the ultimate recommendation I can give the movie is this: I'm one of those people who can't stand the Grateful Dead... yet I found Long Strange Trip enthralling. For the first time, it made me see, and feel, and understand the slovenly glory of what they were up to, even if my ears still process their music as monotonous roots-rock wallpaper."[11]

Jordan Hoffman wrote in Vanity Fair, "The film's first half is a typical, though very well-polished rock doc: getting the band together, how they found their sound, their struggles and successes. After intermission, the narrative goes to unexpected and extremely emotional places: an examination of intense public adoration and the burdens of fame. For lack of a better term, it becomes a real movie.... But I do think that Bar-Lev has done the impossible: his film will make those who normally scoff at those patchouli-smelling ersatz flower children tap their feet, maybe even join them for a dance."[12]

In the Los Angeles Times, Robin Abcarian said, "I can’t imagine that anyone will walk away from Long Strange Trip, Amir Bar-Lev’s remarkable four-hour documentary about the Grateful Dead, without a newfound appreciation for the band’s music and its place in American popular culture."[13]