How high is Up at The O2? Toni 17 May 2022 16:26 Updated Follow Up at The O2 is 52m at its highest point. Related articles What are the opening times? I’ve got a fear of heights. Can I still climb? Can I get a refund if I’m scared or worried I’ll not complete it? How do I know if I can complete the course? What footwear is suitable? Comments 0 comments Article is closed for comments.