It is huge. Olympian in fact.
When it opened in time for the opening ceremonies of the 1908 London Games, The White City Stadium sat 68,000 people, although it could fit another nearly 30,000 standing spectators. It had an oval running track, about 7 meters wide. And between the running track and the stands was a cycling track that was another 11 meters wide.
The oval tracks were so wide that, in addition to space for athletic events like archery and hammer throwing, there was enough room for a swimming and diving pool!
Unfortunately, the 1908 Olympics was the stadium’s high point. In 1927, it was sold to the Greyhound Racing Association, literally going to the dogs. The stadium no longer exists, torn down in 1985 to make way for the headquarters of the BBC.