diff --git a/docs/root/configuration/access_log.rst b/docs/root/configuration/access_log.rst
index c85bd554aa104..94392f404c69f 100644
--- a/docs/root/configuration/access_log.rst
+++ b/docs/root/configuration/access_log.rst
@@ -102,6 +102,14 @@ The following command operators are supported:
   TCP
     Total duration in milliseconds of the downstream connection.
 
+%RESPONSE_DURATION%
+  HTTP
+    Total duration in milliseconds of the request from the start time to the first byte read from the
+    upstream host.
+
+  TCP
+    Not implemented ("-").
+
 .. _config_access_log_format_response_flags:
 
 %RESPONSE_FLAGS%
@@ -123,6 +131,14 @@ The following command operators are supported:
     * **FI**: The request was aborted with a response code specified via :ref:`fault injection <config_http_filters_fault_injection>`.
     * **RL**: The request was ratelimited locally by the :ref:`HTTP rate limit filter <config_http_filters_rate_limit>` in addition to 429 response code.
 
+%RESPONSE_TX_DURATION%
+  HTTP
+    Total duration in milliseconds of the request from the first byte read from the upstream host to the last
+    byte sent downstream.
+
+  TCP
+    Not implemented ("-").
+
 %UPSTREAM_HOST%
   Upstream host URL (e.g., tcp://ip:port for TCP connections).
 
diff --git a/docs/root/intro/version_history.rst b/docs/root/intro/version_history.rst
index eb2bfe7f6752c..588e1225387f5 100644
--- a/docs/root/intro/version_history.rst
+++ b/docs/root/intro/version_history.rst
@@ -40,6 +40,7 @@ Version history
   <envoy_api_field_config.filter.network.http_connection_manager.v2.HttpConnectionManager.tracing>`.
 * upstream: added configuration option to the subset load balancer to take locality weights into account when
   selecting a host from a subset.
+* access log: added RESPONSE_DURATION and RESPONSE_TX_DURATION.
 
 1.7.0
 ===============
diff --git a/source/common/access_log/access_log_formatter.cc b/source/common/access_log/access_log_formatter.cc
index 933a1cc65a789..88ec956d9d558 100644
--- a/source/common/access_log/access_log_formatter.cc
+++ b/source/common/access_log/access_log_formatter.cc
@@ -35,14 +35,16 @@ FormatterPtr AccessLogFormatUtils::defaultAccessLogFormatter() {
 std::string
 AccessLogFormatUtils::durationToString(const absl::optional<std::chrono::nanoseconds>& time) {
   if (time) {
-    return fmt::FormatInt(
-               std::chrono::duration_cast<std::chrono::milliseconds>(time.value()).count())
-        .str();
+    return durationToString(time.value());
   } else {
     return UnspecifiedValueString;
   }
 }
 
+std::string AccessLogFormatUtils::durationToString(const std::chrono::nanoseconds& time) {
+  return fmt::FormatInt(std::chrono::duration_cast<std::chrono::milliseconds>(time).count()).str();
+}
+
 const std::string&
 AccessLogFormatUtils::protocolToString(const absl::optional<Http::Protocol>& protocol) {
   if (protocol) {
@@ -221,6 +223,18 @@ RequestInfoFormatter::RequestInfoFormatter(const std::string& field_name) {
     field_extractor_ = [](const RequestInfo::RequestInfo& request_info) {
       return AccessLogFormatUtils::durationToString(request_info.firstUpstreamRxByteReceived());
     };
+  } else if (field_name == "RESPONSE_TX_DURATION") {
+    field_extractor_ = [](const RequestInfo::RequestInfo& request_info) {
+      auto downstream = request_info.lastDownstreamTxByteSent();
+      auto upstream = request_info.firstUpstreamRxByteReceived();
+
+      if (downstream && upstream) {
+        auto val = downstream.value() - upstream.value();
+        return AccessLogFormatUtils::durationToString(val);
+      }
+
+      return UnspecifiedValueString;
+    };
   } else if (field_name == "BYTES_RECEIVED") {
     field_extractor_ = [](const RequestInfo::RequestInfo& request_info) {
       return fmt::FormatInt(request_info.bytesReceived()).str();
diff --git a/source/common/access_log/access_log_formatter.h b/source/common/access_log/access_log_formatter.h
index b0a1246345c06..b6cb0a8a2775d 100644
--- a/source/common/access_log/access_log_formatter.h
+++ b/source/common/access_log/access_log_formatter.h
@@ -73,6 +73,7 @@ class AccessLogFormatUtils {
   static FormatterPtr defaultAccessLogFormatter();
   static const std::string& protocolToString(const absl::optional<Http::Protocol>& protocol);
   static std::string durationToString(const absl::optional<std::chrono::nanoseconds>& time);
+  static std::string durationToString(const std::chrono::nanoseconds& time);
 
 private:
   AccessLogFormatUtils();
diff --git a/test/common/access_log/access_log_formatter_test.cc b/test/common/access_log/access_log_formatter_test.cc
index fe711bf4f2b1e..44c0ddf9eda84 100644
--- a/test/common/access_log/access_log_formatter_test.cc
+++ b/test/common/access_log/access_log_formatter_test.cc
@@ -73,6 +73,28 @@ TEST(AccessLogFormatterTest, requestInfoFormatter) {
     EXPECT_EQ("-", response_duration_format.format(header, header, header, request_info));
   }
 
+  {
+    RequestInfoFormatter ttlb_duration_format("RESPONSE_TX_DURATION");
+
+    absl::optional<std::chrono::nanoseconds> dur_upstream = std::chrono::nanoseconds(10000000);
+    EXPECT_CALL(request_info, firstUpstreamRxByteReceived()).WillRepeatedly(Return(dur_upstream));
+    absl::optional<std::chrono::nanoseconds> dur_downstream = std::chrono::nanoseconds(25000000);
+    EXPECT_CALL(request_info, lastDownstreamTxByteSent()).WillRepeatedly(Return(dur_downstream));
+
+    EXPECT_EQ("15", ttlb_duration_format.format(header, header, header, request_info));
+  }
+
+  {
+    RequestInfoFormatter ttlb_duration_format("RESPONSE_TX_DURATION");
+
+    absl::optional<std::chrono::nanoseconds> dur_upstream;
+    EXPECT_CALL(request_info, firstUpstreamRxByteReceived()).WillRepeatedly(Return(dur_upstream));
+    absl::optional<std::chrono::nanoseconds> dur_downstream;
+    EXPECT_CALL(request_info, lastDownstreamTxByteSent()).WillRepeatedly(Return(dur_downstream));
+
+    EXPECT_EQ("-", ttlb_duration_format.format(header, header, header, request_info));
+  }
+
   {
     RequestInfoFormatter bytes_received_format("BYTES_RECEIVED");
     EXPECT_CALL(request_info, bytesReceived()).WillOnce(Return(1));