How far out to sea can you see can you see when standing on the beach?

The distance you can see out to sea when standing on the beach depends on your height and the curvature of the Earth. Generally, a person with an average eye level of about 5.5 feet can see approximately 2.9 miles (4.7 kilometers) to the horizon. Taller individuals can see farther; for example, someone 6 feet tall can see about 3.1 miles (5 kilometers). Factors like atmospheric conditions and obstructions can also affect visibility.