'Free Solo' crosses $16 million mark at doc box office, but 'They Shall Not Grow Old' keeps top spot

Josh Groban concert documentary Bridges opens in second place

A still image from "They Shall Not Grow Old," directed by Peter Jackson. Photo courtesy Warner Bros.

Peter Jackson's World War I documentary They Shall Not Grow Old keeps adding to its impressive box office total.

The 3D film, which features colorized archival footage of "the war to end all wars," pushed its cume to $14,271,347 over the Presidents Day holiday weekend, according to data provided by audience measurement firm comScore. It has held the top spot among nonfiction films in theatrical release for three weeks now.

Coming in second place was the concert doc Josh Groban Bridges, which was filmed during a live performance by the singer at Madison Square Garden. It racked up $273,849, comScore reported, playing at 390 locations on a single night--February 12. 

Free Solo crossed the $16 million mark in total returns over the weekend, in its 21st week in theaters. The film by E. Chai Vasarhelyi and Jimmy Chin has become the second most popular documentary released in the past year, trailing only Won't You Be My Neighbor?, which collected $22.8 million.

​Free Solo competes for the Academy Award for Best Documentary Feature this weekend.