In William Gibson’s Neuromancer, he posits that future America will form the “Boston Atlanta Metropolitan Axis”, a giant urban sprawl that merges the entire East Coast from Boston to Atlanta into a single megacity.
I’m interested in modern megalopolitic sprawls where you can go for miles on end without ever leaving urbanity. For the purposes of this question, I’m going to define a rural area as one that is largely dedicated to agriculture or wildlife preserve but not parklands like Central Square Park or Golden Gate Park and the journey only counts if you are at least a mile away from any rural area along most of the route (certain bottlenecks due to natural features are allowed if it’s only a few miles).
Houston: From roughly around Sugarland on the West to Baytown on the East is about 50 miles
New York: Starting from around Medford on Long Island, going west through Manhatten, then Newark down to Edison, NJ is about 100 miles
Los Angeles: Starting from San Bernadino and going to Van Nuys is about 100 miles.
Tokyo: Starting from Gunma in the north, going down through Tokyo and Yokahama through to Hiratsuku is about 100 miles
Guangdong: Starting from Aotou harbor, going through Shenzhen, then Guandong through to Foshan is about 150 miles
Are there any other epic urban sprawls of this magnitude?