The Terminator Meets The Mountain – Epic Moment at Arnold Classic UK Goes Viral as Hafþór J Björnsson (37) & Arnold Schwarzenegger (78) Train Together
A rare moment in the fitness world caught major attention as Arnold Schwarzenegger and Hafþór Björnsson trained side by side at the Arnold Classic UK Expo, held at the NEC in Birmingham from March 27 to 29. Fans quickly shared clips online, turning the moment into a viral highlight.
People at the event, along with videos posted from the expo floor, showed Schwarzenegger actively coaching Björnsson through intense sets. Even at 78, the bodybuilding legend stayed hands-on, repeating his well-known training mindset.
The crowd gathered tightly around the training area, reacting to the unusual pairing. Björnsson, known to many as “The Mountain” from Game of Thrones, stayed focused while taking in advice from the seven-time Mr. Olympia.
The Terminator and The Mountain training at the Arnold Classic UK Expo 💪 pic.twitter.com/SZf9DE9LKR
— Hafþór J Björnsson (@ThorBjornsson_) March 28, 2026
According to reports from the event and circulating footage, this meeting was not just for show. Both men are currently preparing for major goals in 2026. Schwarzenegger is training for his return in the upcoming film King Conan, where he will once again step into one of his most famous roles. He has already said the film will include all kinds of madness, violence, magic, and creatures.
At the same time, Björnsson is preparing for a major strength challenge. He plans to compete at the Enhanced Games in May in Las Vegas, where he will attempt a 515 kg deadlift.
The expo itself brought in thousands of fans and featured other big names in bodybuilding like Jay Cutler and Ronnie Coleman. Still, it was the moment between Schwarzenegger and Björnsson that stood out the most.
Outside of the gym, both men remain active in entertainment. Schwarzenegger has already finished filming The Man With the Bag and is also in talks connected to the Predator series. Björnsson continues to balance strongman competitions with media appearances and fitness ventures.
Moments like this show why these figures still matter. It is not just about strength. It is about influence across generations. Seeing one legend guide another creates real excitement. At the same time, both still have something to prove, which keeps fans interested. What do you think? Can Arnold still deliver as Conan, and will Thor actually break that record? Share your thoughts in the comments.