66.88 centimeters is equal to 26.3 inches.
This is slightly longer than the average adult cat (18-24 inches) but shorter than the average length of a 5-month-old baby (28 inches).
It is also slightly shorter than the height of a standard basketball hoop (10 feet or 120 inches).
Additionally, it is similar in length to a standard keyboard (17-18 inches) or a typical textbook (25.7-27.5 cm).