diff --git a/src/main/java/com/conveyal/r5/transit/TransitLayer.java b/src/main/java/com/conveyal/r5/transit/TransitLayer.java
index 871491ff2..b4c00af55 100644
--- a/src/main/java/com/conveyal/r5/transit/TransitLayer.java
+++ b/src/main/java/com/conveyal/r5/transit/TransitLayer.java
@@ -842,4 +842,8 @@ public String stopString(int stopIndex, boolean includeName) {
         if (includeName) stop += " (" + stopNames.get(stopIndex) + ")";
         return stop;
     }
+
+    public String feedFromStop(int stopIndex) {
+        return stopIdForIndex.get(stopIndex) == null ? "[new]" : stopIdForIndex.get(stopIndex).split(":")[0];
+    }
 }
diff --git a/src/main/java/com/conveyal/r5/transit/path/RouteSequence.java b/src/main/java/com/conveyal/r5/transit/path/RouteSequence.java
index 6ed2eb73c..d4bb9dc85 100644
--- a/src/main/java/com/conveyal/r5/transit/path/RouteSequence.java
+++ b/src/main/java/com/conveyal/r5/transit/path/RouteSequence.java
@@ -37,6 +37,8 @@ public String[] detailsWithGtfsIds(TransitLayer transitLayer){
             routeIds.add(transitLayer.routeString(routes.get(i), false));
             boardStopIds.add(transitLayer.stopString(stopSequence.boardStops.get(i), false));
             alightStopIds.add(transitLayer.stopString(stopSequence.alightStops.get(i), false));
+            alightStopIds.add(":");
+            alightStopIds.add(transitLayer.feedFromStop(stopSequence.boardStops.get(i)));
             rideTimes.add(String.format("%.1f", stopSequence.rideTimesSeconds.get(i) / 60f));
         }
         String accessTime = stopSequence.access == null ? null : String.format("%.1f", stopSequence.access.time / 60f);