The Home-Run Stadium is a stage used in the Home-Run Contest. It is comprised of a grassy stadium of extreme length (infinite in Super Smash Bros. Brawl) with a single small platform where a Sandbag sits. A Home-Run Bat is next to it.
In Super Smash Bros. Melee
There is a wall to the left of the platform that Sandbag can be bounced off of; however, getting the right bounce to avoid a "No Distance" is difficult.
While the stage does eventually end, hacking is required to ever reach that far.
In Super Smash Bros. Brawl
An energy shield surrounds the platform that deactivates when the timer reaches 1 second, making it easier to avoid having Sandbag fly off prematurely. However, the shield will break if hit too frequently or too hard.