From Homestar Runner Wiki
The Race Track is where the characters exercise on occasion. In Homestar Ruiner, the First Triannual Race to the End of the Race is held there, as well as the Halfathalon in 8-Bit is Enough. There is also a "Million Yard Dash" that is held here, as mentioned by Strong Bad in disconnected. It is located in The Field, and next to Coach Z's 'lacker room'. The track's number of lanes varies. While most often there are 3 lanes visible marked 5-7 (seen in autobiography, disconnected, montage, and Coach Z's 110%) in mile there were 4 lanes marked 1-4; in The Li'l Brudder Show there are 4 unmarked lanes; and in Homestar Ruiner there are 7 unmarked lanes visible, while eight is standard. In mile and Homestar Ruiner, there were stadium stands on the side of the track.