diff --git a/Microsoft.Azure.Cosmos/src/Tracing/TraceWriter.TraceJsonWriter.cs b/Microsoft.Azure.Cosmos/src/Tracing/TraceWriter.TraceJsonWriter.cs
index 247c9f2587..db7512e82b 100644
--- a/Microsoft.Azure.Cosmos/src/Tracing/TraceWriter.TraceJsonWriter.cs
+++ b/Microsoft.Azure.Cosmos/src/Tracing/TraceWriter.TraceJsonWriter.cs
@@ -322,6 +322,17 @@ private void VisitStoreResponseStatistics(
                 this.jsonWriter.WriteFieldName("ResponseTimeUTC");
                 this.WriteDateTimeStringValue(storeResponseStatistics.RequestResponseTime);
 
+                this.jsonWriter.WriteFieldName("DurationInMs");
+                if (storeResponseStatistics.RequestStartTime.HasValue)
+                {
+                    TimeSpan latency = storeResponseStatistics.RequestResponseTime - storeResponseStatistics.RequestStartTime.Value;
+                    this.jsonWriter.WriteNumber64Value(latency.TotalMilliseconds);
+                }
+                else
+                {
+                    this.jsonWriter.WriteNullValue();
+                }
+
                 this.jsonWriter.WriteFieldName("ResourceType");
                 this.jsonWriter.WriteStringValue(storeResponseStatistics.RequestResourceType.ToString());
 
diff --git a/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/BaselineTest/TestBaseline/TraceWriterBaselineTests.TraceData.xml b/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/BaselineTest/TestBaseline/TraceWriterBaselineTests.TraceData.xml
index 75cd9894de..d2c33b99b2 100644
--- a/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/BaselineTest/TestBaseline/TraceWriterBaselineTests.TraceData.xml
+++ b/Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/BaselineTest/TestBaseline/TraceWriterBaselineTests.TraceData.xml
@@ -317,6 +317,7 @@
       "StoreResponseStatistics": [
         {
           "ResponseTimeUTC": "9999-12-31T23:59:59.9999999",
+          "DurationInMs": 315537897600000,
           "ResourceType": "Document",
           "OperationType": "Query",
           "RequestSessionToken": "42",
@@ -513,6 +514,7 @@
       "StoreResponseStatistics": [
         {
           "ResponseTimeUTC": "0001-01-01T00:00:00",
+          "DurationInMs": null,
           "ResourceType": "Database",
           "OperationType": "Create",
           "LocationEndpoint": null,