@One_Piece_God: no just no. read trough all the comments if you want to even realize why are we still debating.
@GrayWolf2: that feat was immediately when he got out of his ship. and saiyans dont become 30 times stronger with zenkai. they at most double their power level. btw i saw the official map and measured with pixel ruler the distance from kamehouse to the place goku and vegeta fought (10,000 km) i grabbed that and measured the entire world map. let me tell you the total size of the planet was a little below 30,000 kilometers. our earth has 40,000 kilometers. i guess that supports my theory that DB earth is smaller. here is the map in case you are wondering:
I'm pretty sure the feat people are talking about is when Goku healed from his injuries against Ginyu and traveled from one side of Namek to the other to encounter Freeza. When he did this his powerlevel went from 90,000 base, to 3,000,000. While you are right with normal Zenkai boosts in the beginning they only seemed to increase by maybe a third of what their power was Goku's Zenkai boost in this case was greatly increased over the norm. Even he was shocked by it so it wasn't your typical boost. I don't know how fast that makes Goku. I could lowball a lot and say 500 miles per second but that is just not right. Also good map but two things: 1) Using the shootout area between Goku and Vegeta is okay but let's face it not entirely accurate. We don't know whether they were closer or farther when Goku arrived and also they said over 10,000 kilometers. This can mean anywhere from 10,000-15,000 so it's tough to calculate. Though I will say you found a much better map than I did. 2) If we use this map and go by what Raditz said we get an exact 12,909 kilometers from where he fought Piccolo to either Kame house or Goku's home or in all likelihood somewhere in between since he was flying on Kinto Un. Using that as a measurement on this map you get around the 40,000 kilometers that the earth is.