diff --git a/README.md b/README.md
index 9910ac7..2c3c7f0 100644
--- a/README.md
+++ b/README.md
@@ -374,13 +374,13 @@ Règles modélisées :
   `cast_spell` (le moteur ne modélise pas de temps d'incantation — `SpellSpec`
   n'a pas de champ `cast_time`, donc tout sort s'incante comme une action
   standard), `maneuver`, `channel_energy`, `hex`, `delay`, `ready`,
-  `total_defense`, `aid_another` ; **mouvement** = `move`, `stand_up`,
-  `retrieve_weapon` (sortir une arme est une action de mouvement),
-  `repair_weapon`, `run` (round complet en RAW, mais modélisé ici comme une
-  mécanique de mouvement posant `moved_this_turn` et déjà exclu de
-  `_FULL_ROUND_KINDS` — cohérence assumée) ; **swift** = `swift`, `deed`,
-  `inspire_courage` ; **round complet** = `full_attack`, `charge`, `withdraw`,
-  `full_round`, `spell_combat` (sort + attaque à outrance dans le même round) ;
+   `total_defense`, `aid_another` ; **mouvement** = `move`, `stand_up`,
+   `retrieve_weapon` (sortir une arme est une action de mouvement),
+   `repair_weapon` ; **swift** = `swift`, `deed`,
+   `inspire_courage` ; **round complet** = `full_attack`, `charge`, `withdraw`,
+   `full_round`, `spell_combat` (sort + attaque à outrance dans le même round),
+   `run` (round complet en RAW — il consacre le standard ET le mouvement, tout
+   en posant `moved_this_turn` et `running`) ;
   **libre/conditionnel (hors budget)** = `wait`, `free`, `immediate` (hors-tour ;
   il consomme le PROCHAIN swift via `immediate_used`, pas les compartiments du
   tour courant), `5foot_step` (pas libre, exclusif avec tout autre mouvement via
diff --git a/src/pf1e_simulator/combat.py b/src/pf1e_simulator/combat.py
index 8d2bce3..4dcf9b4 100644
--- a/src/pf1e_simulator/combat.py
+++ b/src/pf1e_simulator/combat.py
@@ -3393,6 +3393,10 @@ class CombatEngine:
         """
         kind = "run"
         if state.moved_this_turn:
+            # Defense in depth, mirroring the _move/_5foot_step no-op-ok
+            # convention. Unreachable through the filtered path: run is a
+            # full-round action, so no move-slot action can precede it in a
+            # kept sequence (the budget filter would have dropped one).
             return ActionResult(kind=kind, ok=True, reason=_REASON_OK)
         if self.has_condition_flag(state, "cant_move"):
             self._log(f"round {self._current_round} {state.combatant.id}: wait (cannot move)")
@@ -5781,7 +5785,9 @@ def _choose_spell_action(
     return None
 
 
-_FULL_ROUND_KINDS: frozenset[str] = frozenset({"full_attack", "charge", "withdraw", "full_round"})
+_FULL_ROUND_KINDS: frozenset[str] = frozenset(
+    {"full_attack", "charge", "withdraw", "full_round", "run"}
+)
 _SWIFT_BONUS_KINDS: frozenset[str] = frozenset({"deed", "inspire_courage", "swift"})
 # PF1e (CRB): a nauseated creature can take only a single move action per
 # turn — no standard, no full-round, no attacks, no spellcasting.
@@ -5843,12 +5849,11 @@ def _nauseated_filter(actions: tuple[Action, ...]) -> tuple[Action, ...]:
 #   SpellSpec has no cast_time field, so every spell casts as a standard),
 #   maneuver, channel_energy, hex, delay, ready, total_defense, aid_another
 # - move: move, stand_up, retrieve_weapon (drawing a weapon is a move action),
-#   repair_weapon, run (a full-round action in RAW, but this engine models it
-#   as move machinery that sets moved_this_turn and already excludes it from
-#   _FULL_ROUND_KINDS — kept consistent, see README)
+#   repair_weapon
 # - swift: swift, deed, inspire_courage (the engine's swift bonus kinds)
 # - full-round: full_attack, charge, withdraw, full_round, spell_combat
-#   (spell + full attack in one round); consumes the standard AND the move slot
+#   (spell + full attack in one round), run (4x-speed movement, PF1e full-round);
+#   consumes the standard AND the move slot
 # - free/conditional (everything else, no budget): wait, free, immediate
 #   (off-turn; it consumes the NEXT swift via immediate_used, not this turn's
 #   slots), 5foot_step (free step, mutually exclusive with other movement via
@@ -5860,13 +5865,13 @@ _ACTION_ECONOMY_STANDARD_KINDS: frozenset[str] = frozenset({
     "delay", "ready", "total_defense", "aid_another",
 })
 _ACTION_ECONOMY_MOVE_KINDS: frozenset[str] = frozenset({
-    "move", "stand_up", "retrieve_weapon", "repair_weapon", "run",
+    "move", "stand_up", "retrieve_weapon", "repair_weapon",
 })
 _ACTION_ECONOMY_SWIFT_KINDS: frozenset[str] = frozenset(
     {"swift", "deed", "inspire_courage"}
 )
 _ACTION_ECONOMY_FULL_ROUND_KINDS: frozenset[str] = frozenset({
-    "full_attack", "charge", "withdraw", "full_round", "spell_combat",
+    "full_attack", "charge", "withdraw", "full_round", "spell_combat", "run",
 })
 _ACTION_ECONOMY_FREE_KINDS: frozenset[str] = frozenset({
     "wait", "free", "immediate", "5foot_step", "drop_prone",
diff --git a/tests/test_aid_and_run.py b/tests/test_aid_and_run.py
index a5d9779..545ff65 100644
--- a/tests/test_aid_and_run.py
+++ b/tests/test_aid_and_run.py
@@ -438,12 +438,17 @@ def test_run_and_aid_without_target_are_rejected() -> None:
     eng = _duo(policy, [10, 5], round_cap=1)
     t = eng.run().transcript
     hero = eng._states[0]
+    # run is a full-round action: it consumes the standard AND the move slot,
+    # so the budget filter drops the following aid_another as a surplus
+    # standard before it can even reach the missing-target gate.
     assert hero.last_action_results == [
+        ActionResult(
+            kind="aid_another", ok=False, reason="downgraded:action_economy"
+        ),
         ActionResult(kind="run", ok=False, reason="missing_target"),
-        ActionResult(kind="aid_another", ok=False, reason="missing_target"),
     ]
     assert "round 1 hero: run rejected (missing_target)" in t
-    assert "round 1 hero: aid_another rejected (missing_target)" in t
+    assert "round 1 hero: aid_another rejected (missing_target)" not in t
     assert hero.pos == (0, 0)
     assert hero.running is False
 
diff --git a/tests/test_conformance_action_economy.py b/tests/test_conformance_action_economy.py
index cfd759e..06b460a 100644
--- a/tests/test_conformance_action_economy.py
+++ b/tests/test_conformance_action_economy.py
@@ -92,9 +92,8 @@ def test_slot_per_kind_matches_pf1e_action_type() -> None:
         # move actions
         "move": "move", "stand_up": "move", "retrieve_weapon": "move",
         "repair_weapon": "move",
-        # run: RAW full-round, but the engine models it as move machinery
-        # (sets moved_this_turn, excluded from _FULL_ROUND_KINDS) — consistent.
-        "run": "move",
+        # run: PF1e full-round action (4x speed); consumes standard + move.
+        "run": "full_round",
         # swift actions
         "swift": "swift", "deed": "swift", "inspire_courage": "swift",
         # full-round actions