Up at The O2 is an exhilarating 90 minute experience that takes you on a guided expedition over the roof of The O2 via a fabric walkway. Suspended 2m above the surface of The O2 roof, the walkway is 52m above ground level and 380m long. At its steepest point the walkway has an incline of 28° on the way up and 30° on the way back down and has a slight bounce to it to mirror the surface of the tent.