An ultra race is actually a speed race or and endurance race? Athens Classic Marathon route is as difficult as they say? Speed workouts are necessary for ultra races preparation or not? What exactly a runner needs in order to switch between mountain and road running races and vice versa? What are the differences between women and man marathoners? We are in the middle of the mountain running racing season, but also in the preparation and training period for famous and very demanding races, like Spartathlon ultra race and Athens Classic Marathon. Therefore, it is the most suitable period for an in-depth discussion with Advendure fellow Ioannis Dagoglou regarding all these hot issues.