White Lines wrote:
How great can you be as a runner if you ran moderately and harder daily?
This is basically what inexperienced and poor performing runners do, so we know it is not a recipe for success.
I believe Strava has crunched participant data leading up to marathons and found that the characteristics of more successful participants is (1) higher mileage and (2) polarised training. The characteristic of poor performers was the approach you just described.