Fat burning and endurance training really are a perfect combination.
Considering endurance is predominately an aerobic activity, ensuring that your body can burn fat is such an advantage to your endurance training and performance.
Looking past all of the health benefits of becoming a good fat burner (metabolic flexibility), the benefits can dramatically improve ones endurance capacity with the added advantage of ketones utilised by the working muscles and brain.
When endurance is the goal understanding that a key factor to your performance is your bodies ability to access energy. Whether this is through a dietary source or your storage reserves like carbs and fats.
So… why not use both?
Body fat and carbs are a perfect combo with minimised digestive stress.