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
thehobgoblin 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
