Most people use this to get feedback on their day’s effort:
It is good and fine to use the ole’ GPS to get your data. But what I am thinking about is when you get done with your race or big time workout and are cooling down, drinking (water, chocolate milk, beer, whatevs) and you and your training partners get to discussing. You look at terrain, weather, how you felt heading into the effort, how you felt during, how you feel afterwards, your shoe choice, the weather, your splits, your average pace, what you ate or drank before and during. You spin the workout if you ran badly (i.e. make some excuses). You pound your chest in a modest way if you killed it. You look at what you could have done better. You look at what you excelled at. You ask your training partners how their run and give THEM feedback. You commiserate, you celebrate, you ran hard.