Unless I'm mistaken, I believe this is the first sonic speed run ever on SDA! I know people have wanted one for some time now, so I finally decided to submit my run.
I did this run using my Game boy Advance SP, which was connected to my Nintendo Gamecube (GBP). I use the SP because I feel it's easier to Air dash, which is very useful in this run. I use it to change from ball form to running form without losing speed, and to gain speed (Neo Green Hill is a good example of this).
The run is single segment, done on the Normal Difficulty. Although anyone can watch it, I highly recommend you play the game first. A lot of people complained about how slow this game was, and it is, but I think you'll be in for a surprise to see how fast Sonic can really go!
You may have noticed that I start different levels at different times. This is because of all of the moving objects in a level. I find a good time to start the level, so that when I reach point A in X amount of time, the objects will be in a location that is to my advantage, or make my job easier. It was a pain in the butt to find a good time to start for the casino levels though.
You probably have other questions about the run such as why I took a hit here, or waited there, or sucked ass at the final boss. All of your answers can (hopefully) be found below in my level by level analysis of my run.