diff --git a/internal/cmd/egctl/testdata/translate/out/default-resources.all.yaml b/internal/cmd/egctl/testdata/translate/out/default-resources.all.yaml
index 06afc627840..83d2c82e6d8 100644
--- a/internal/cmd/egctl/testdata/translate/out/default-resources.all.yaml
+++ b/internal/cmd/egctl/testdata/translate/out/default-resources.all.yaml
@@ -598,7 +598,8 @@ xds:
                     portValue: 8000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: httproute/default/backend/rule/0/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: grpcroute/default/backend/rule/0
@@ -611,7 +612,8 @@ xds:
                     portValue: 9000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: grpcroute/default/backend/rule/0/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: tlsroute/default/backend/rule/-1
@@ -624,7 +626,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: tlsroute/default/backend/rule/-1/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: tcproute/default/backend/rule/-1
@@ -637,7 +640,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: tcproute/default/backend/rule/-1/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: udproute/default/backend/rule/-1
@@ -650,7 +654,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: udproute/default/backend/rule/-1/backend/0
     - '@type': type.googleapis.com/envoy.admin.v3.ClustersConfigDump
       dynamicActiveClusters:
       - cluster:
diff --git a/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.json b/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.json
index 53fc117ef6e..1e461964bbf 100644
--- a/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.json
+++ b/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.json
@@ -235,7 +235,9 @@
                       }
                     ],
                     "loadBalancingWeight": 1,
-                    "locality": {}
+                    "locality": {
+                      "region": "httproute/default/backend/rule/0/backend/0"
+                    }
                   }
                 ]
               }
@@ -260,7 +262,9 @@
                       }
                     ],
                     "loadBalancingWeight": 1,
-                    "locality": {}
+                    "locality": {
+                      "region": "grpcroute/default/backend/rule/0/backend/0"
+                    }
                   }
                 ]
               }
@@ -285,7 +289,9 @@
                       }
                     ],
                     "loadBalancingWeight": 1,
-                    "locality": {}
+                    "locality": {
+                      "region": "tlsroute/default/backend/rule/-1/backend/0"
+                    }
                   }
                 ]
               }
@@ -310,7 +316,9 @@
                       }
                     ],
                     "loadBalancingWeight": 1,
-                    "locality": {}
+                    "locality": {
+                      "region": "tcproute/default/backend/rule/-1/backend/0"
+                    }
                   }
                 ]
               }
@@ -335,7 +343,9 @@
                       }
                     ],
                     "loadBalancingWeight": 1,
-                    "locality": {}
+                    "locality": {
+                      "region": "udproute/default/backend/rule/-1/backend/0"
+                    }
                   }
                 ]
               }
diff --git a/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.yaml b/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.yaml
index 40cee9b63a0..5c5b27e97f9 100644
--- a/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.yaml
+++ b/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.all.yaml
@@ -131,7 +131,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: httproute/default/backend/rule/0/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: grpcroute/default/backend/rule/0
@@ -144,7 +145,8 @@ xds:
                     portValue: 9000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: grpcroute/default/backend/rule/0/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: tlsroute/default/backend/rule/-1
@@ -157,7 +159,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: tlsroute/default/backend/rule/-1/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: tcproute/default/backend/rule/-1
@@ -170,7 +173,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: tcproute/default/backend/rule/-1/backend/0
       - endpointConfig:
           '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
           clusterName: udproute/default/backend/rule/-1
@@ -183,7 +187,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: udproute/default/backend/rule/-1/backend/0
     - '@type': type.googleapis.com/envoy.admin.v3.ClustersConfigDump
       dynamicActiveClusters:
       - cluster:
diff --git a/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.endpoint.yaml b/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.endpoint.yaml
index 4b510ae5bfc..76b49b6fa24 100644
--- a/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.endpoint.yaml
+++ b/internal/cmd/egctl/testdata/translate/out/from-gateway-api-to-xds.endpoint.yaml
@@ -14,7 +14,8 @@ xds:
                   portValue: 3000
             loadBalancingWeight: 1
           loadBalancingWeight: 1
-          locality: {}
+          locality:
+            region: httproute/default/backend/rule/0/backend/0
     - endpointConfig:
         '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
         clusterName: grpcroute/default/backend/rule/0
@@ -27,7 +28,8 @@ xds:
                   portValue: 9000
             loadBalancingWeight: 1
           loadBalancingWeight: 1
-          locality: {}
+          locality:
+            region: grpcroute/default/backend/rule/0/backend/0
     - endpointConfig:
         '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
         clusterName: tlsroute/default/backend/rule/-1
@@ -40,7 +42,8 @@ xds:
                   portValue: 3000
             loadBalancingWeight: 1
           loadBalancingWeight: 1
-          locality: {}
+          locality:
+            region: tlsroute/default/backend/rule/-1/backend/0
     - endpointConfig:
         '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
         clusterName: tcproute/default/backend/rule/-1
@@ -53,7 +56,8 @@ xds:
                   portValue: 3000
             loadBalancingWeight: 1
           loadBalancingWeight: 1
-          locality: {}
+          locality:
+            region: tcproute/default/backend/rule/-1/backend/0
     - endpointConfig:
         '@type': type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment
         clusterName: udproute/default/backend/rule/-1
@@ -66,4 +70,5 @@ xds:
                   portValue: 3000
             loadBalancingWeight: 1
           loadBalancingWeight: 1
-          locality: {}
+          locality:
+            region: udproute/default/backend/rule/-1/backend/0
diff --git a/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.json b/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.json
index 11c9c3261e2..16c1d3522fc 100644
--- a/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.json
+++ b/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.json
@@ -235,7 +235,9 @@
                       }
                     ],
                     "loadBalancingWeight": 1,
-                    "locality": {}
+                    "locality": {
+                      "region": "httproute/envoy-gateway-system/backend/rule/0/backend/0"
+                    }
                   }
                 ]
               }
@@ -295,7 +297,9 @@
                         }
                       ],
                       "loadBalancingWeight": 1,
-                      "locality": {}
+                      "locality": {
+                        "region": "raw_githubusercontent_com_443/backend/0"
+                      }
                     }
                   ]
                 },
diff --git a/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.yaml b/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.yaml
index c5470eebb98..8b70c138d50 100644
--- a/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.yaml
+++ b/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.all.yaml
@@ -131,7 +131,8 @@ xds:
                     portValue: 3000
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: httproute/envoy-gateway-system/backend/rule/0/backend/0
     - '@type': type.googleapis.com/envoy.admin.v3.ClustersConfigDump
       dynamicActiveClusters:
       - cluster:
@@ -169,7 +170,8 @@ xds:
                       portValue: 443
                 loadBalancingWeight: 1
               loadBalancingWeight: 1
-              locality: {}
+              locality:
+                region: raw_githubusercontent_com_443/backend/0
           name: raw_githubusercontent_com_443
           outlierDetection: {}
           perConnectionBufferLimitBytes: 32768
diff --git a/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.cluster.yaml b/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.cluster.yaml
index aa29280bb37..47f144cbe20 100644
--- a/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.cluster.yaml
+++ b/internal/cmd/egctl/testdata/translate/out/jwt-single-route-single-match-to-xds.cluster.yaml
@@ -37,7 +37,8 @@ xds:
                     portValue: 443
               loadBalancingWeight: 1
             loadBalancingWeight: 1
-            locality: {}
+            locality:
+              region: raw_githubusercontent_com_443/backend/0
         name: raw_githubusercontent_com_443
         outlierDetection: {}
         perConnectionBufferLimitBytes: 32768