diff --git a/README.md b/README.md
index 2dfd745d..54c2e791 100644
--- a/README.md
+++ b/README.md
@@ -40,11 +40,11 @@ Make your selection:
 
 ## API Coverage Statistics
 
-- **Total API Methods**: 134+ unique endpoints (snapshot)
+- **Total API Methods**: 137+ unique endpoints (snapshot)
 - **Categories**: 13 organized sections
 - **User & Profile**: 4 methods (basic user info, settings)
 - **Daily Health & Activity**: 9 methods (today's health data)
-- **Advanced Health Metrics**: 12 methods (fitness metrics, HRV, VO2, training readiness, running tolerance)
+- **Advanced Health Metrics**: 15 methods (fitness metrics, HRV, VO2, training readiness, training zones, running tolerance)
 - **Historical Data & Trends**: 9 methods (date range queries, weekly aggregates)
 - **Activities & Workouts**: 38 methods (comprehensive activity, workout management, typed workout uploads, scheduling, import, edit description / exercise sets)
 - **Body Composition & Weight**: 8 methods (weight tracking, body composition)
diff --git a/demo.py b/demo.py
index d34b9848..bd061b48 100755
--- a/demo.py
+++ b/demo.py
@@ -227,6 +227,18 @@ def __init__(self):
                 "desc": f"Get running tolerance from '{config.week_start.isoformat()}' to '{config.today.isoformat()}'",
                 "key": "get_running_tolerance",
             },
+            "c": {
+                "desc": "Get configured heart rate zones",
+                "key": "get_heart_rate_zones",
+            },
+            "d": {
+                "desc": "Get configured power zones for all sports",
+                "key": "get_power_zones",
+            },
+            "e": {
+                "desc": "Get configured cycling power zones",
+                "key": "get_power_zones_for_sport",
+            },
         },
     },
     "4": {
@@ -3966,6 +3978,22 @@ def execute_api_call(api: Garmin, key: str) -> None:
                 api_call_desc=f"api.get_stress_data('{config.today.isoformat()}')",
             ),
             "get_lactate_threshold": lambda: get_lactate_threshold_data(api),
+            "get_heart_rate_zones": lambda: call_and_display(
+                api.get_heart_rate_zones,
+                method_name="get_heart_rate_zones",
+                api_call_desc="api.get_heart_rate_zones()",
+            ),
+            "get_power_zones": lambda: call_and_display(
+                api.get_power_zones,
+                method_name="get_power_zones",
+                api_call_desc="api.get_power_zones()",
+            ),
+            "get_power_zones_for_sport": lambda: call_and_display(
+                api.get_power_zones_for_sport,
+                "CYCLING",
+                method_name="get_power_zones_for_sport",
+                api_call_desc="api.get_power_zones_for_sport('CYCLING')",
+            ),
             "get_intensity_minutes_data": lambda: call_and_display(
                 api.get_intensity_minutes_data,
                 config.today.isoformat(),
diff --git a/garminconnect/__init__.py b/garminconnect/__init__.py
index 58c22284..baf09648 100644
--- a/garminconnect/__init__.py
+++ b/garminconnect/__init__.py
@@ -344,8 +344,9 @@ def __init__(
         self.garmin_connect_daily_summary_url = "/usersummary-service/usersummary/daily"
         self.garmin_connect_metrics_url = "/metrics-service/metrics/maxmet/daily"
         self.garmin_connect_biometric_url = "/biometric-service/biometric"
-
         self.garmin_connect_biometric_stats_url = "/biometric-service/stats"
+        self.garmin_connect_heart_rate_zones_url = "/biometric-service/heartRateZones"
+        self.garmin_connect_power_zones_url = "/biometric-service/powerZones"
         self.garmin_connect_daily_hydration_url = (
             "/usersummary-service/usersummary/hydration/daily"
         )
@@ -2573,6 +2574,29 @@ def get_cycling_ftp(
         logger.debug("Requesting latest cycling FTP")
         return self.connectapi(url)
 
+    def get_heart_rate_zones(self) -> list[dict[str, Any]]:
+        """Return configured heart rate zones for all sport profiles."""
+        logger.debug("Requesting heart rate zones")
+        return self.connectapi(self.garmin_connect_heart_rate_zones_url)
+
+    def get_power_zones(self) -> list[dict[str, Any]]:
+        """Return configured power zones for all supported sports."""
+        url = f"{self.garmin_connect_power_zones_url}/sports/all"
+        logger.debug("Requesting power zones for all sports")
+        return self.connectapi(url)
+
+    def get_power_zones_for_sport(self, sport: str) -> dict[str, Any]:
+        """Return configured power zones for a Garmin sport key."""
+        if not isinstance(sport, str) or not sport.strip():
+            raise ValueError("sport must be a non-empty string")
+        normalized_sport = sport.strip().upper()
+        if not re.fullmatch(r"[A-Z_]+", normalized_sport):
+            raise ValueError("sport must contain only letters and underscores")
+
+        url = f"{self.garmin_connect_power_zones_url}/sport/{normalized_sport}"
+        logger.debug("Requesting power zones for sport %s", normalized_sport)
+        return self.connectapi(url)
+
     def get_activity(self, activity_id: str) -> dict[str, Any]:
         """Return activity summary, including basic splits."""
         activity_id = str(_validate_positive_integer(int(activity_id), "activity_id"))
diff --git a/tests/test_garmin_unit.py b/tests/test_garmin_unit.py
index 32a45694..653f80b3 100644
--- a/tests/test_garmin_unit.py
+++ b/tests/test_garmin_unit.py
@@ -126,6 +126,41 @@ def test_get_training_readiness_builds_url_with_date(
         assert "/metrics-service/metrics/trainingreadiness/2026-03-15" in url
         assert result == payload
 
+    def test_get_heart_rate_zones_builds_url(self, garmin: garminconnect.Garmin):
+        payload = [{"sport": "RUNNING", "zone1Floor": 120}]
+        with patch.object(garmin, "connectapi", return_value=payload) as mock:
+            result = garmin.get_heart_rate_zones()
+
+        mock.assert_called_once_with("/biometric-service/heartRateZones")
+        assert result == payload
+
+    def test_get_power_zones_builds_all_sports_url(self, garmin: garminconnect.Garmin):
+        payload = [{"sport": "CYCLING", "zone1Floor": 100}]
+        with patch.object(garmin, "connectapi", return_value=payload) as mock:
+            result = garmin.get_power_zones()
+
+        mock.assert_called_once_with("/biometric-service/powerZones/sports/all")
+        assert result == payload
+
+    def test_get_power_zones_for_sport_normalizes_sport_key(
+        self, garmin: garminconnect.Garmin
+    ):
+        payload = {"sport": "CROSS_COUNTRY_SKIING", "zone1Floor": 100}
+        with patch.object(garmin, "connectapi", return_value=payload) as mock:
+            result = garmin.get_power_zones_for_sport(" cross_country_skiing ")
+
+        mock.assert_called_once_with(
+            "/biometric-service/powerZones/sport/CROSS_COUNTRY_SKIING"
+        )
+        assert result == payload
+
+    @pytest.mark.parametrize("sport", ["", "   ", "cycling/running", 123, None])
+    def test_get_power_zones_for_sport_rejects_invalid_keys(
+        self, garmin: garminconnect.Garmin, sport: object
+    ):
+        with pytest.raises(ValueError, match="sport must"):
+            garmin.get_power_zones_for_sport(sport)  # type: ignore[arg-type]
+
     def test_get_stress_data_builds_url_with_date(self, garmin: garminconnect.Garmin):
         with patch.object(garmin, "connectapi", return_value={"avgStress": 25}) as mock:
             garmin.get_stress_data("2026-03-15")