Display total distance for workouts

app.py

@@ -233,6 +233,7 @@ def get_workouts_for_user(user_id):
             average_rpm = sum(
                 reading.rpm for reading in cadence_readings) / len(cadence_readings)
             calories = cadence_readings[-1].calories
+            distance = cadence_readings[-1].distance
             workouts_data.append({
                 'id': workout.id,
                 'user_id': user_id,
@@ -240,6 +241,7 @@ def get_workouts_for_user(user_id):
                 'duration': format_duration(duration),
                 'average_rpm': int(average_rpm),
                 'calories': calories,
+                'distance': distance
             })
     return workouts_data