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Chapter 9: Playing the Game / Encounter Mode / Movement in Encounters / Terrain

Difficult Terrain

Source Core Rulebook pg. 475 ^2.0
Difficult terrain is any terrain that impedes your movement, ranging from particularly rough or unstable surfaces to thick ground cover and countless other impediments. Moving into a square of difficult terrain (or moving 5 feet into or within an area of difficult terrain, if you’re not using a grid) costs an extra 5 feet of movement. Moving into a square of greater difficult terrain instead costs 10 additional feet of movement. This additional cost is not increased when moving diagonally. You can’t Step into difficult terrain.

Movement you make while you are jumping ignores the terrain you’re jumping over. Some abilities (such as flight or being incorporeal) allow you to avoid the movement reduction from some types of difficult terrain. Certain other abilities let you ignore difficult terrain on foot; such an ability also allows you to move through greater difficult terrain at the normal movement cost as for difficult terrain, though it wouldn’t let you ignore greater difficult terrain unless the ability specifies otherwise.

Archives of Nethys

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Difficult Terrain