"On the journey they met a strange phenomenon known as a 'lung-gom' runner. First seen as a distant moving black spot, this rapidly changed into a man running towards them at an incredible speed. Alexandra was warned not to stop the speeding lama or it would kill him. When she looked closely at him she could see that he his expression was extremely relaxed and staring fixedly at an imaginary far away object. His steps were as regular as a pendulum, though he didn't seem to run but progressed by great leaps like a bouncing rubber ball. He held a magic dagger in his right hand which he seemed to be using as a staff, though it was high off the ground. Apparently, such runners would carry on this amazing feat for days without stopping for food or water. Alexandra was told that years of meditation were required before undertaking this feat. "
I have read about these before in .... uhhh ... this cool book I read once ... uhhh ... maybe it was called "Way of the White Cloud" but to be honest I forget (details often). It was about some dudes travelling across Tibet .... anyway ... as you were.