@hittheassasin: Some info I wanted to add the only way of put Ichibei's feat at any impressive tier is assuming that Ichibei crossed the distance in one second, and no time frame is provided in the manga so that point is moot, we also don't know which Ri Ichibei was referring we he accomplished such a feat, we don't know if Kubo uses the Japanese or Chinese Ri when drawing the characters, the Official Japanese Manga, doesn't specifies which Ri, the characters uses.
And as I said multiples and multiples times to you, and as a great man already said
"The li (Chinese: 里, lǐ, or 市里, shìlǐ), also known as the Chinese mile, is a traditional Chinese unit of distance. The li has varied considerably over time but was usually about a third as long as the English mile and now has a standardized length of a half-kilometer (500 meters or 1,640 feet). This is then divided into 1 500 chi or "Chinese feet"."
"The present day Korean ri (리, 里) and Japanese ri (里) are units of measurements that can be traced back to the Chinese li (里).
Although the Chinese unit was unofficially used in Japan since the Zhou Dynasty, the countries officially adopted the measurement used by the Tang Dynasty (618–907 AD). The ri of an earlier era in Japan was thus true to Chinese length, corresponding to six chō (ca. 500–600 m), but later somehow elongated to denote the distance that a person can walk in a fixed time. Thus, there had been various ri of 36, 40, and 48 chō."
The Japanese version of Ri greatly changes depending on which time period you are referring to. And like I great man already said since soul society is a representation of a more early Japan it's the most logical conclusion for them to use the unit of muser of their time.
Plus, is not like one panel translates to one second either way.