688.65 centimeters is equivalent to 270.94 inches.
To put this into perspective, here are some objects that are approximately 270.94 inches in height or length:
1. A standard-sized golden retriever dog (average height: 22-24 inches)
2. A basketball hoop (ring diameter: 18 inches)
3. A regulation-sized pool table (length: 254 cm or 100 inches)
4. A standard refrigerator (height: 70 inches)
5. A king-size bed (length: 80 inches)
6. A human adult male (average height: 69 inches)
7. An average-sized sedan car (length: 190-200 inches)
8. A standard-sized giraffe (height: 18 feet)
9. A regulation-size bowling lane (length: 60 feet)
10. The Statue of Liberty’s index finger (length: 8 feet).