If i run for 1 hour everyday, when can i start to see fat loss in my thighs?

Spot fat loss does : Not occur naturally. By losing weight in general some will probably be thigh fat. But, we don't get to choose what area of body fat is lost from. Eat healthy ; be physically active. Calories burned must > those consumed. Tone thighs w plie, squat, wall squat, ball squat, plyometric squat, stair steps, lunges, lunges w dumbbells, ball squeeze ; single leg circle. Engage in regular aerobic exercise.

Interesting question: I can understand why you might think exercising your legs would favor fat loss on your thighs. Unfortunately our bodies don't do spot fat loss except via surgery. If you expend more calories than you consume, and shift your diet to low carb with lean proteins and healthy fats, you should see weight ; fat loss over several months -- including on your thighs. Avoid processed foods ; sweets too.