Range and Penalties
A ranged weapon’s range increment is listed along with its other statistics (see Chapter 7). If you make an attack with a ranged weapon from a distance greater than its listed range, you take a cumulative –2 penalty to the attack roll for each full range increment of distance between you and the target beyond the first (or fraction thereof).
For most ranged weapons, the maximum range is 10 range increments, or 10× the number listed as the weapon’s range. For thrown weapons, the maximum range is 5 range increments. Some ranged weapons have different maximum ranges, but if so, their descriptions specify their maximum ranges.
Source
Core Rulebook pg. 245