If you had an unobstructed view, the horizon at sea level would be approximately 24 miles away.
Gresham, Oregon is approximately 200 feet above sea level.
It is 544 feet above sea level.
It is 781 feet above sea level.
The horizon is about 230 miles away when you are at 35,000 feet above sea level.
The average elevation is 246 feet above sea level.
100 feet
Brockton,MA is 112 feet [34.1376m] above sea level.
Haverhill, Massachusetts is approximately 150 feet above sea level.
Fredericksburg, Virginia is approximately 36 feet above sea level.
Key West is 18 feet above sea level.
20 feet.
137 feet