It is not currently possible to walk from Alaska to Russia. The two land masses are separated by the Bering Strait, but scholars have theorized that this area was once a "land bridge" that connected the continents of Asia and North America.
With the Bering Strait separating North America and Asia, the only way to walk from Alaska to Russia would be to walk on water. Those who are under the impression that it is currently possible to walk from Alaska to Russia may be confusing current history with the ancient. Scholars have theorized that, thousands of years ago, North America and Asia were connected in the far northern region near what is now the Bering Strait. Some theories hold that this connecting land, known as a "land bridge," was a means of transportation for humans, animals and plants to move from Asia into North America.