Most step ups in one minute with a 40 lb pack
Who
Ron Cooper
What
60 times
Where
United States Marblehead
When

The most step ups in one minute with a 40 lb pack is 60 and was achieved by Ron Cooper (USA) at CrossFit Marblehead in Marblehead, Massachusetts, USA, on 2 December 2016.

This was the fourth and final successful attempt by Ron which was broadcast live on Guinness World Records' Facebook page.