diff --git a/include/constants/overworld_config.h b/include/constants/overworld_config.h
index 50f45933df..64437ca9bd 100644
--- a/include/constants/overworld_config.h
+++ b/include/constants/overworld_config.h
@@ -1,9 +1,12 @@
 #ifndef GUARD_CONSTANTS_OVERWORLD_CONFIG_H
 #define GUARD_CONSTANTS_OVERWORLD_CONFIG_H
 
+// Movement config
+#define OW_RUNNING_INDOORS      GEN_LATEST  // In Gen4+, players are allowed to run indoors.
+
 // Overworld flags
-#define OW_FLAG_NO_ENCOUNTER             0   // If this flag is set, wild encounters will be disabled.
-#define OW_FLAG_NO_TRAINER_SEE           0   // If this flag is set, trainers will not battle the player unless they're talked to.
+#define OW_FLAG_NO_ENCOUNTER             0  // If this flag is set, wild encounters will be disabled.
+#define OW_FLAG_NO_TRAINER_SEE           0  // If this flag is set, trainers will not battle the player unless they're talked to.
 
 // Debug options
 #define DEBUG_SYSTEM_ENABLE         TRUE               // Enables a overworld debug menu for changing flags, variables, giving pokemon and more, accessed by holding R and pressing START while in the overworld by default.
diff --git a/src/bike.c b/src/bike.c
index ae30ce288b..8f3faa2da0 100644
--- a/src/bike.c
+++ b/src/bike.c
@@ -1053,7 +1053,11 @@ void Bike_HandleBumpySlopeJump(void)
 
 bool32 IsRunningDisallowed(u8 metatile)
 {
+#if OW_RUNNING_INDOORS == GEN_3
     if (!gMapHeader.allowRunning || IsRunningDisallowedByMetatile(metatile) == TRUE)
+#else
+    if (IsRunningDisallowedByMetatile(metatile) == TRUE)
+#endif
         return TRUE;
     else
         return FALSE;