The 200-foot high pass characteristic yellow color will be suspended from masts, around 90 people allowed to run.
See a central platform for a panoramic view of London to visitors.
O2 Arena owns Alistair Wood of AEG Europe said the walkway during the day and evening is an experience to O2 not only present the appeal to visitors is the purpose of creation.
He said, "The lightweight nature of the structure will ensure that the experience is as close to walking on the roof of the tent as possible, whilst the 60-metre climb and the fact that the experience is open air will add to the sense of excitement and adrenalin".