Who is faster?

One evening I was there on the roof of my college building. All alone I stood there facing the red sun, and trying to reach the horizon with my sight. From far away I could see two birds flying distinctly. They were flying towards the college building. As it came closer, I realized that it wasn't two birds but some unique creatures. And in a few seconds the two creatures were standing right in front of me.
One was Pegasus, the white flying horse and other the flying dragon! I had read in mythology that Pegasus was the fastest horse and was used by humans to reach the Gods. I wondered the distances I could cover riding this horse and the places I could see. I could reach my home and meet my parents. It had been a year since I last meet my parents.
Then I turned to the Flying dragon which would be even faster than the Pegasus. It was a huge dragon and could also burst fireballs! I could feel its strength in the sound of its breath and the blood flowing through the dark veins all over its body. I could fly so fast with it that I never had to return. I could be the one living man powerful than the rest.
But soon I realized that I was standing all alone and the sun had set. The rays of the red sun could now only reach the high red clouds...