* Por el pasillo: This is a general translation and works well in most cases. It literally means "through the hallway."
* Al final del pasillo: This means "at the end of the hallway" and is appropriate if you're referring to something at the far end.
* Bajando por el pasillo: This translates to "going down the hallway" and emphasizes movement. It's better if you're talking about walking down the corridor.
* A lo largo del pasillo: This means "along the corridor" and is suitable if you're describing something located along the length of the corridor.
The best option depends on the specific nuance you want to convey. If you can provide more context, I can give you a more precise translation.