686 centimeters is equal to 270.08 inches.
Some objects that are approximately 270 inches in length include:
1. A standard volleyball net, which is 32 feet (384 inches) wide and 39 inches tall
2. A full-size adult bed, which is typically 76 inches wide and 80 inches long
3. A school bus, which is around 33 feet (396 inches) long
4. A bowling lane, which is 42 inches wide and 60 feet (720 inches) long
5. A grand piano, which can range from 5 feet (60 inches) to 9 feet (108 inches) long.