diff --git a/proto/tripdirections.proto b/proto/tripdirections.proto
index 0aeba4f..dabe802 100644
--- a/proto/tripdirections.proto
+++ b/proto/tripdirections.proto
@@ -6,6 +6,11 @@ message TripDirections {
     optional float lat = 1;
     optional float lng = 2;
   }
+  
+  message BoundingBox {
+    optional LatLng min_ll = 1;
+    optional LatLng max_ll = 2;
+  }
 
   message Location {
     enum Type {
@@ -35,6 +40,7 @@ message TripDirections {
   message Summary {
     optional float length = 1;          // kilometers or miles based on units
     optional uint32 time = 2;           // seconds
+    optional BoundingBox bbox = 3;      // Bounding box of the shape
   }
 
   message TransitStop {
diff --git a/proto/trippath.proto b/proto/trippath.proto
index 3384d36..2b5d497 100644
--- a/proto/trippath.proto
+++ b/proto/trippath.proto
@@ -6,6 +6,11 @@ message TripPath {
     optional float lat = 1;
     optional float lng = 2;
   }
+  
+  message BoundingBox {
+    optional LatLng min_ll = 1;
+    optional LatLng max_ll = 2;
+  }
  
   message Location {
     enum Type {
@@ -215,6 +220,6 @@ message TripPath {
   repeated Node node = 5;
   repeated Admin admin = 6;
   optional string shape = 7;
-
+  optional BoundingBox bbox = 8;
 }
 
diff --git a/src/odin/directionsbuilder.cc b/src/odin/directionsbuilder.cc
index 2e24296..53c08cf 100644
--- a/src/odin/directionsbuilder.cc
+++ b/src/odin/directionsbuilder.cc
@@ -392,6 +392,11 @@ TripDirections DirectionsBuilder::PopulateTripDirections(
       etp->GetLength(directions_options.units()));
   trip_directions.mutable_summary()->set_time(
       etp->node(etp->GetLastNodeIndex()).elapsed_time());
+  auto mutable_bbox = trip_directions.mutable_summary()->mutable_bbox();
+  mutable_bbox->mutable_min_ll()->set_lat(etp->bbox().min_ll().lat());
+  mutable_bbox->mutable_min_ll()->set_lng(etp->bbox().min_ll().lng());
+  mutable_bbox->mutable_max_ll()->set_lat(etp->bbox().max_ll().lat());
+  mutable_bbox->mutable_max_ll()->set_lng(etp->bbox().max_ll().lng());
 
   // Populate shape
   trip_directions.set_shape(etp->shape());