In case you're searching for the length between stumps, It is called Pitch and it is consistently a rectangular region of 22 yards (20.12m) long and 10ft (3.05m) in width.
Also, in case you're willing to know length of the stump, Each stump is 28 inches (71.1 cm) tall with greatest and least measurements of 11⁄2 inches (3.81 cm) and 13⁄8 inches (3.49 cm).