diff --git a/demo.py b/demo.py
index b77bf5e..f530fa6 100755
--- a/demo.py
+++ b/demo.py
@@ -88,7 +88,7 @@ def __init__(self):
         # API call settings
         self.default_limit = 100
         self.start = 0
-        self.start_badge = 1  # Badge related calls start counting at 1
+        self.start_badge = 1  # Badge related calls in demo default to 1 (backend page index)
 
         # Activity settings
         self.activitytype = ""  # Possible values: cycling, running, swimming, multi_sport, fitness_equipment, hiking, walking, other
@@ -2221,7 +2221,9 @@ def clean_step_ids(workout_segments):
 
     except FileNotFoundError:
         print(f"❌ File not found: {config.workoutfile}")
-        print("ℹ️ Please ensure the workout JSON file exists in the test_data directory")
+        print(
+            "ℹ️ Please ensure the workout JSON file exists in the test_data directory"
+        )
     except json.JSONDecodeError as e:
         print(f"❌ Invalid JSON format in {config.workoutfile}: {e}")
         print("ℹ️ Please check the JSON file format")
diff --git a/garminconnect/__init__.py b/garminconnect/__init__.py
index acdd7e0..011f046 100644
--- a/garminconnect/__init__.py
+++ b/garminconnect/__init__.py
@@ -1418,7 +1418,8 @@ def get_badge_challenges(self, start: int, limit: int) -> dict[str, Any]:
         start = _validate_non_negative_integer(start, "start")
         limit = _validate_positive_integer(limit, "limit")
         url = self.garmin_connect_badge_challenges_url
-        params = {"start": str(start), "limit": str(limit)}
+        backend_start = str(1 if start == 0 else start)
+        params = {"desc": "true", "start": backend_start, "limit": str(limit)}
         logger.debug("Requesting badge challenges for user")
 
         return self.connectapi(url, params=params)
@@ -1428,7 +1429,8 @@ def get_available_badge_challenges(self, start: int, limit: int) -> dict[str, An
         start = _validate_non_negative_integer(start, "start")
         limit = _validate_positive_integer(limit, "limit")
         url = self.garmin_connect_available_badge_challenges_url
-        params = {"start": str(start), "limit": str(limit)}
+        backend_start = str(1 if start == 0 else start)
+        params = {"desc": "true", "start": backend_start, "limit": str(limit)}
         logger.debug("Requesting available badge challenges")
 
         return self.connectapi(url, params=params)
@@ -1440,7 +1442,8 @@ def get_non_completed_badge_challenges(
         start = _validate_non_negative_integer(start, "start")
         limit = _validate_positive_integer(limit, "limit")
         url = self.garmin_connect_non_completed_badge_challenges_url
-        params = {"start": str(start), "limit": str(limit)}
+        backend_start = str(1 if start == 0 else start)
+        params = {"desc": "true", "start": backend_start, "limit": str(limit)}
         logger.debug("Requesting badge challenges for user")
 
         return self.connectapi(url, params=params)
@@ -1452,7 +1455,8 @@ def get_inprogress_virtual_challenges(
         start = _validate_non_negative_integer(start, "start")
         limit = _validate_positive_integer(limit, "limit")
         url = self.garmin_connect_inprogress_virtual_challenges_url
-        params = {"start": str(start), "limit": str(limit)}
+        backend_start = str(1 if start == 0 else start)
+        params = {"desc": "true", "start": backend_start, "limit": str(limit)}
         logger.debug("Requesting in-progress virtual challenges for user")
 
         return self.connectapi(url, params=params)