The Dutch Giant 7'2 vs The Mountain 6'9! Who grows bigger arms?

[Hafthor Bjornsson]

The Mountain vs The Dutch Giant in Iceland—an epic arm pump battle where Oliver outgrew Thor by 1.5 cm!



Thoros Power Gym in Iceland hosted an epic meet-up between two giants: Hafthor “The Mountain” Björnsson and Oliver “The Dutch Giant” Richters. What started as a casual training session turned into a full-blown arm showdown to see who could grow the biggest pump.

• Starting measurements: Thor’s arms were already massive at 57 cm, while Oliver came in at 52 cm.
• The plan: Two bicep and two tricep exercises each, for a total of 12 working sets—strict bodybuilding focus.
• Training: They hit curls, cable work, heavy tricep pushdowns, and lying skull crushers. Both pushed to their limits, with Thor showcasing insane pressing power while Oliver’s endurance and pump shocked everyone.
• Lifestyle talk: Between sets, they discussed the struggles of being giants—airplanes, beds, chairs, showers—all too small for men of their size. Oliver also shared his journey as the world’s tallest bodybuilder (unofficial, since he’s not pro), actor in Reacher, and entrepreneur running a protein-meal company. Thor reflected on his acting start as The Mountain on Game of Thrones.
• The results: After the brutal session, Thor’s arms swelled to 59 cm (+2 cm), while Oliver jumped to 55.5 cm (+3.5 cm). That gave Oliver the victory—out-pumping the World’s Strongest Man himself.

Both men showed massive respect for each other, joking about careers, families, and training philosophies. Thor admitted Oliver is the only one who’s ever beaten him in a triceps exercise, while Oliver called the day a milestone—standing alongside his idol and proving his arms could hang with the best.

Final pump check:

• Thor: 59 cm (+2)
• Dutch Giant: 55.5 cm (+3.5) — Winner of the pump battle

This was more than just a workout—it was two giants pushing limits, swapping stories, and giving fans an unforgettable clash of size and strength.