Bow Hit Distance

When your arrow hits a player, a chat line says who and from how far: "Bow hit Name from 23.4 blocks".

Turning it on

1. Sour Client menu, Combat topic (or search for it from All).
2. Flip the switch on its row. Click the row itself to open its settings beside the list.

Every setting

In the order the game shows them. Indented rows only appear once the row above is set the way it says.