Boston

It’s a worthy tribute bound to illuminate and inspire.

Boston, Jon Dunham’s film about that city’s marathon, is a contender — an emotional comeback story, interspersed with thrilling moments in its history, without gloss, cliche or even nostalgia.

A bit of tightening, largely involving segues abroad to Australia, Japan and Kenya, would have helped the picture’s pacing. But it’s the pride and strength of Boston’s leaders and citizens, as well as the marathon’s devoted contenders and planners that ultimately fuel this affecting portrait.