Movement and Positioning Rules

Movement and positioning rules govern how creatures navigate the battlefield in Dungeons & Dragons, determining the distance a character can travel, how terrain and obstacles interact with that movement, and where a creature can legally stand relative to enemies and allies. These mechanics sit at the center of tactical combat and directly affect attack opportunities, spell targeting, and survival. The rules described here apply to the 5th Edition framework as codified in the Player's Handbook and Dungeon Master's Guide, with references to relevant optional variants where applicable. For a broader orientation to the game's structural foundations, see the D&D Core Rules Overview.

Definition and scope

Movement in D&D 5e refers to the number of feet a creature can travel on its turn during combat. Each creature has a speed stat expressed in feet — the standard walking speed for most Medium humanoid races is 30 feet per turn (Player's Handbook, Chapter 9: Combat). Speed is not limited to walking: climb speed, swim speed, fly speed, and burrow speed are distinct values, each derived from a creature's stat block or granted through class features, spells, or magic items.

The scope of these rules extends beyond raw distance. Positioning — where a creature occupies space on a grid or in theater-of-the-mind play — determines which enemies are within reach of a melee weapon, which allies can benefit from aura effects, and whether line of sight exists for spell targeting. For details on how positioning interacts with attack rolls, see the Attack Rolls and Armor Class page.

How it works

Movement follows a structured set of rules each combat turn:

1. Speed allocation: A creature may move up to its full speed on its turn. Movement does not need to be used all at once — it can be split before and after taking an action or bonus action.
2. Difficult terrain: Moving through difficult terrain (mud, rubble, shallow water, dense foliage) costs 2 feet of movement for every 1 foot traveled. A creature with 30 feet of speed crossing 15 feet of difficult terrain expends all 30 feet doing so.
3. Creature size and space: Each creature occupies a defined space based on its size category. A Medium creature occupies a 5-by-5-foot square (1 square on a standard grid). A Large creature occupies a 10-by-10-foot space. A Tiny creature can share a space with other creatures.
4. Moving through other creatures: A creature may move through the space of an ally freely. Moving through the space of a hostile creature requires that the hostile creature be at least two size categories larger or smaller than the mover, or that the mover use the Tumble optional action. The space of a hostile creature is treated as difficult terrain regardless.
5. Prone and crawling: A prone creature must expend half its speed to stand. Crawling while prone costs 1 additional foot of movement per foot traveled, stacking with difficult terrain costs.
6. Forced movement: Effects like thunderwave, shove, and certain spells move creatures without consuming that creature's movement. Forced movement does not trigger opportunity attacks.

The relationship between movement and the Actions, Bonus Actions, and Reactions framework is direct: the Dash action allows a creature to double its movement for the turn by spending its action, and the Disengage action prevents opportunity attacks triggered by leaving an enemy's reach.

Common scenarios

Opportunity Attacks: When a creature voluntarily moves out of a hostile creature's reach, that hostile may use its reaction to make one melee attack. This is the most tactically significant consequence of movement decisions. Opportunity attacks are not triggered by forced movement, teleportation, or the Disengage action.

Difficult terrain stacking: A creature attempting to cross a frozen lake (difficult terrain) while climbing a slope (additional difficult terrain, at Dungeon Master discretion) may face a 3-feet-per-foot cost, reducing a 30-foot speed to only 10 feet of actual travel distance.

Flanking: Under the optional flanking rule (described in the Dungeon Master's Guide), two allies positioned on directly opposite sides of a hostile creature grant each other advantage on melee attack rolls against that creature. Full details appear on the Flanking and Cover page.

Mounted movement: A mount uses its own speed, not the rider's. A warhorse with 60 feet of speed allows a mounted character to cover twice the ground of a standard foot soldier. The Mounted Combat Rules page addresses how mounts act and how their movement interacts with control actions.

Decision boundaries

The following distinctions govern rulings that frequently arise at the table:

Diagonal movement (grid vs. theater of the mind): The Player's Handbook rules treat each diagonal square on a grid as 5 feet — a simplification. The optional "Diagonals" variant in the Dungeon Master's Guide (Appendix C) applies the 1-2-1 rule: alternating diagonals cost 5 then 10 feet. This variant meaningfully increases the effective cost of diagonal repositioning. For a full treatment of optional and variant rules, see Optional and Variant Rules.

Swim and climb speed vs. improvised movement: A creature without an explicit swim or climb speed can still attempt these movement types but pays double the movement cost. A creature with a defined climb speed of 30 feet (such as a spider) does not pay this penalty. This contrast — granted speed vs. improvised movement — is one of the most commonly misapplied rule pairs.

Teleportation: Spells and abilities that teleport a creature (e.g., misty step, dimension door) bypass movement costs entirely. The creature does not provoke opportunity attacks, does not interact with difficult terrain, and arrives in the destination space without consuming walk speed — unless the spell's description explicitly states otherwise.

Speed of 0: A creature with a speed of 0 (due to the paralyzed or restrained condition, certain spells, or encumbrance rules) cannot benefit from bonuses to speed and cannot take the Dash action. See the Conditions Rules page for the full effects of conditions on movement. For the broader structure of how these mechanics fit within D&D's design philosophy, the How Recreation Works: Conceptual Overview page provides relevant context.

Grapple and speed reduction: A grappled creature's speed becomes 0 unless the grappler's ability or the specific grapple effect specifies otherwise. A creature dragging or carrying a grappled target moves at half speed. Full grappling mechanics are addressed at Grappling and Shoving Rules.

References

• Wizards of the Coast — Player's Handbook (5th Edition), Chapter 9: Combat
• Wizards of the Coast — Dungeon Master's Guide (5th Edition), Appendix C: Optional Rules
• D&D Beyond Rules Compendium — Movement and Position
• dndrules.com — Site Index