Size, Space, and Reach

Pathfinder Core Rulebook (Second Edition), page 473

Creatures and objects of different sizes occupy different amounts of space. The sizes and the spaces they each take up on a grid are listed in Table 9–1: Size and Reach (page 474).

Triggering Moves

1.

Valeros can approach position 1 with the Stride action without triggering reactions.

2.

If Valeros approaches this way to position 2, he triggers reactions

from
both
the

hobgoblin and the troll. The troll has a reach of 10 feet, so Valeros triggers reactions from both enemies when he moves out of the second square and into the third. 3.

If Seoni Strides to position 3, she triggers reactions from the hobgoblin and the troll. Because of its 10-foot reach, the troll could use its reaction when Seoni left either square. She could Step twice to get there to avoid triggering reactions, but that uses 2 actions instead of 1.

Valeros

Table 9–1 also lists the typical reach for creatures of each size, for both tall creatures (most bipeds) and long creatures (most quadrupeds). See page 455 for more about reach.

The Space entry lists how many feet on a side a creature’s space is, so a Large creature fills a 10-foot-by-10-foot space (4 squares on the grid). Sometimes part of a creature extends beyond its space, such as if a giant octopus is grabbing you with its tentacles. In that case, the GM will usually allow attacking the extended portion, even if you can’t reach the main creature. A Small or larger creature or object takes up at least 1 square on a grid, and creatures of these sizes can’t usually share spaces except in situations like a character riding a mount. Rules for moving through other creatures’ spaces appear below.

Table 9–1: Size And Reach

Size Space Reach (Tall) Reach (Long)
Tiny Less than 5 feet 0 feet 0 feet
Small 5 feet 5 feet 5 feet
Medium 5 feet 5 feet 5 feet
Large 10 feet 10 feet 5 feet
Huge 15 feet 15 feet 10 feet
Gargantuan 20 feet or more 20 feet 15 feet

Multiple Tiny creatures can occupy the same square. At least four can fit in a single square, though the GM might determine that even more can fit. Tiny creatures can occupy a space occupied by a larger creature as well, and if their reach is 0 feet, they must do so in order to attack.

2

Troll

1

Hobgoblin Seoni

3