James Gunn gave Peacemaker fans some good news this week, revealing how long the Season 2 finale of the upcoming HBO series will be. What’s the runtime on Peacemaker Season 2’s finale? Gunn was quick to reply with a hopeful answer, revealing that Peacemaker Season 2’s finale will be over 57 minutes long, something that should please big fans of the show. Peacemaker Season 2 largely follows the continued adventures of the character played by John Cena. Peacemaker Season 2 is currently airing on HBO and streaming on HBO Max.