length · Ancient Roman · Roman Republic/Empire

Roman stadium

approx.range

Record: M136
Definition quality: Reconstructed approximate
Conversion mode: range
Calculator: Range only

Definition

1 Roman stadium = 625 Roman feet = 125 passus = 1/8 Roman mile; representative ≈185 m

Documented range

Surviving evidence places one Roman stadium between 183.75 and 187.5 metres. It is recorded as a range because the documented values were not uniform.

History & use

Roman adaptation made the stadium fit neatly into the 5,000-foot Roman mile.

Modern use

Modern use is context-dependent and varies by region or measurement system.

Sources & evidence

Source tier — · confidence high

Related measurements

metre

length · International · Modern

SI base unit of length. Its definition fixes the speed of light in vacuum at exactly 299,792,458 m/s, with the second defined from the caesium-133 hyperfine frequency.