According to all the above calculations, the equatorial length of the earth is about 40 thousand kilometers, and the normal walking speed is about 5 kilometers per hour. Of course, this figure can't be compared with the fastest flying animals in the world. The final calculation result is that it takes about 80 15 hours for a person to circle the earth without eating or drinking, and it takes 334 days, less than a year.
However, some people think that this calculation method is not accurate, because the human body is not a machine and can walk at high speed all the time, which means that it is impossible for people to walk continuously for more than 300 days, especially without rest.
But talking so much now is just speculation. Most of the time, you don't know what the truth is until you really do it. Of course, some people say that machines can imitate the speed of human movement, and then through calculation, we can know how long it takes a person to go around the earth. Maybe in the future, some people will try to get the answer by themselves, but not necessarily.