If you walk for 45minutes how far do i walk?

Anything that walks across a boundary shared by two locations. For instance, if something walks into A from B, it is walking out of B and walking into A; therefore, it is walking in but walking out.

with a walk

Well depending on where they live, usually about 1-5km, and on the way back, they have to walk that far with large bottles on their sholders.

You can't walk around the world. A land bridge does not exist between N. America and Eurasia, but the circumference is app. 38,600 kilometers or 24,000 miles.

1800 miles