This is not an ego thing, though. Rather the ultra attitude merely reflects a shift of perspective which catapults the traditional, limit-setting athlete into the realm of Planet Ultra, a place of wonderment where absolutely nothing is insurmountable. Hence the scores of ultra events world-wide, gravely misunderstood by those who don't participate, but gleefully entered and conquered by those with the attitude.
Ultra athletes are simply better at Wanting things.
Scientific estimates range that ultra racing is anywhere from 50 to 300 percent mental. Whether it's samurai-like focus or heavy metal distraction, ultra athletes need some way to keep their mind occupied. Little or nothing will scare you, too. A really strong background in a singular athletic pursuit will give you an edge, or at least an amount of confidence, not only in that sport but in others, too. Plus there is a universalness to outdoor athletics that transcends the imaginary barriers between different sports.