Unfortunately FFG decided to give no concrete distances because you should be not buried by counting squares on a battle grid. That is a noble thought but unfortunately its an unnecessary complication for groups who love battle mats and grids.
But even if you are one of these Stortelling GM imagine a scene" You see 3 beastmen. The first thing that my player would ask" How far they are away" "A Bowshot" would be a lyrical answer but would be shattered by the question "how far I can shoot with my bow.
So i prepared some distances and i would ask you wether you think its a good transformation into the world of facts and figures.
close - up to 5 metres
medium up to 30 metres
long 100 metres
Extreme 500 metres
does that make sense for you?