689.81 centimeters is equivalent to 271.75 inches.
This can be compared to the length of a standard twin size bed, which is approximately 75 inches long. So, 689.81 centimeters is approximately 3.6 times the length of a twin size bed.
It is also comparable to the height of a stacked double decker bus, which is approximately 235 inches tall. So, 689.81 centimeters is approximately 1.16 times the height of a stacked double decker bus.
Additionally, it is almost the same length as a regulation-sized NBA basketball court, which is 94 feet or 28.6 meters long. So, 689.81 centimeters is approximately 2.9 times the length of a basketball court.