Each base is 90 feet apart including home plate, making the infield a perfect square turned 45 degrees.
193.36 kilometres (120.15 miles)
16,423.39 kilometres (10,205.05 miles)
This depends on your perspective. "Far far away" for an ant is a mile. A mile for you may not be that far away.
5,192.12 kilometres (3,226.24 miles)