Hello how may I help you? What is the deepest point on earth? That's in the Mariana Trench. It's called the Challenger Deep How deep is it? It's 36,700 feet below sea level. Pretty deep! That's REALLY deep. How far is it from my location? It is 3600 miles from you That's REALLY close. I think I will walk there. Is it possible? It's possible. But it's going to take quite a while. I estimate 29 days of continuous walking. Better bring some water! Thanks. That's all I need. Have a great walk!