Nothing happens. Until modern transportation was developed people walked everywhere. People in many countries still need to walk where they are going.
you turn into sand
you walk around for ages and ages and it will eventually hatch
Something
they went for a walk and came back begging
When you walk in baseball, you get a free pass to the next base.
You Die !
The dark ages.
Ages
Not much. If you walk to the bottom of the earth, not much happens there, either. Gravity is slightly higher at the poles, but it is unnoticeable.
For ages mean something takes forever and might not even happen. In ages means that it happens in a long time. So for ages might not happen and in ages is something that will happen but in a long time.
sometimes you float in the air a bit or walk a bit slowly
people does walk in spain.