diff --git a/data/odyssey_functions.csv b/data/odyssey_functions.csv
index 2a5b6dbe2..d291eb29d 100644
--- a/data/odyssey_functions.csv
+++ b/data/odyssey_functions.csv
@@ -27974,10 +27974,10 @@ Address,Quality,Size,Name
 0x000000710045b6f4,U,000108,_ZNK23PlayerJudgeStartRolling21isTriggerRestartSwingEv
 0x000000710045b760,U,000004,_ZN23PlayerJudgeStartRolling5resetEv
 0x000000710045b764,U,000004,_ZN23PlayerJudgeStartRolling6updateEv
-0x000000710045b768,U,000028,_ZN19PlayerJudgeStartRunC1EPKN2al9LiveActorEPK11PlayerConstPK19IUsePlayerCollisionPK11PlayerInputPK21PlayerCounterForceRunPK6IJudge
-0x000000710045b784,U,000124,_ZNK19PlayerJudgeStartRun5judgeEv
-0x000000710045b800,U,000004,_ZN19PlayerJudgeStartRun5resetEv
-0x000000710045b804,U,000004,_ZN19PlayerJudgeStartRun6updateEv
+0x000000710045b768,O,000028,_ZN19PlayerJudgeStartRunC1EPKN2al9LiveActorEPK11PlayerConstPK19IUsePlayerCollisionPK11PlayerInputPK21PlayerCounterForceRunPK6IJudge
+0x000000710045b784,W,000124,_ZNK19PlayerJudgeStartRun5judgeEv
+0x000000710045b800,O,000004,_ZN19PlayerJudgeStartRun5resetEv
+0x000000710045b804,O,000004,_ZN19PlayerJudgeStartRun6updateEv
 0x000000710045b808,U,000028,_ZN22PlayerJudgeStartRunOldC1EPKN2al9LiveActorEPK19IUsePlayerCollisionPK11PlayerInput
 0x000000710045b824,U,000008,_ZN22PlayerJudgeStartRunOld5resetEv
 0x000000710045b82c,U,000084,_ZN22PlayerJudgeStartRunOld6updateEv
diff --git a/src/Player/PlayerCounterForceRun.h b/src/Player/PlayerCounterForceRun.h
index 0ea60c34a..83af7452c 100644
--- a/src/Player/PlayerCounterForceRun.h
+++ b/src/Player/PlayerCounterForceRun.h
@@ -9,6 +9,7 @@ class PlayerCounterForceRun {
     void setupForceRun(s32 frames, f32 speed);
     void update();
 
+    bool isForceRun() const { return mCounter > 0; }
     s32 getCounter() const { return mCounter; }
     f32 getSpeed() const { return mSpeed; }
 
diff --git a/src/Player/PlayerInput.h b/src/Player/PlayerInput.h
index 971c2992e..417e6b013 100644
--- a/src/Player/PlayerInput.h
+++ b/src/Player/PlayerInput.h
@@ -74,6 +74,8 @@ class PlayerInput {
     bool isThrowTypeSpiral(const sead::Vector2f&) const;
     bool isThrowTypeRolling(const sead::Vector2f&) const;
 
+    bool isMove() const;
+
 private:
     const al::LiveActor* mLiveActor;
     const IUsePlayerCollision* mPlayerCollision;
diff --git a/src/Player/PlayerJudgeStartRun.cpp b/src/Player/PlayerJudgeStartRun.cpp
new file mode 100644
index 000000000..78f911cef
--- /dev/null
+++ b/src/Player/PlayerJudgeStartRun.cpp
@@ -0,0 +1,29 @@
+#include "Player/PlayerJudgeStartRun.h"
+#include "Player/PlayerCounterForceRun.h"
+#include "Player/PlayerInput.h"
+#include "Util/PlayerCollisionUtil.h"
+#include "Util/StageSceneFunction.h"
+
+PlayerJudgeStartRun::PlayerJudgeStartRun(const al::LiveActor* player, const PlayerConst* pConst,
+                                         const IUsePlayerCollision* collision,
+                                         const PlayerInput* input,
+                                         const PlayerCounterForceRun* counterForceRun,
+                                         const IJudge* judgeWaterSurfaceRun)
+    : mPlayer(player), mCollision(collision), mInput(input), mCounterForceRun(counterForceRun),
+      mJudgeForceLand(judgeWaterSurfaceRun) {}
+
+bool PlayerJudgeStartRun::judge() const {
+    if (!rs::isCollidedGround(mCollision))
+        return false;
+    if (mCounterForceRun->isForceRun())
+        return true;
+    if (rs::isJudge(mJudgeForceLand))
+        return false;
+    if (mInput->isMove())
+        return true;
+    return rs::isAutoRunOnGroundSkateCode(mPlayer, mCollision, 0.5f);
+}
+
+void PlayerJudgeStartRun::reset() {}
+
+void PlayerJudgeStartRun::update() {}
diff --git a/src/Player/PlayerJudgeStartRun.h b/src/Player/PlayerJudgeStartRun.h
new file mode 100644
index 000000000..e27b8b4c2
--- /dev/null
+++ b/src/Player/PlayerJudgeStartRun.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <basis/seadTypes.h>
+
+#include "Player/IJudge.h"
+
+namespace al {
+class LiveActor;
+}
+class IUsePlayerCollision;
+class PlayerConst;
+class PlayerInput;
+class PlayerCounterForceRun;
+
+class PlayerJudgeStartRun : public IJudge {
+public:
+    PlayerJudgeStartRun(const al::LiveActor* player, const PlayerConst* pConst,
+                              const IUsePlayerCollision* collision, const PlayerInput* input,
+                              const PlayerCounterForceRun* counterForceRun,
+                              const IJudge* judgeWaterSurfaceRun);
+
+    void reset() override;
+    void update() override;
+    bool judge() const override;
+
+private:
+    const al::LiveActor* mPlayer;
+    const IUsePlayerCollision* mCollision;
+    const PlayerInput* mInput;
+    const PlayerCounterForceRun* mCounterForceRun;
+    const IJudge* mJudgeForceLand;
+};
diff --git a/src/Util/PlayerCollisionUtil.h b/src/Util/PlayerCollisionUtil.h
index 043e6cd91..a92b9b490 100644
--- a/src/Util/PlayerCollisionUtil.h
+++ b/src/Util/PlayerCollisionUtil.h
@@ -2,10 +2,18 @@
 
 #include <basis/seadTypes.h>
 
+namespace al {
+class LiveActor;
+}
 class IUsePlayerHeightCheck;
+class IUsePlayerCollision;
 
 namespace rs {
 
 f32 getGroundHeight(const IUsePlayerHeightCheck*);
 
-}
+bool isCollidedGround(const IUsePlayerCollision*);
+
+bool isAutoRunOnGroundSkateCode(const al::LiveActor*, const IUsePlayerCollision*, float);
+
+}  // namespace rs