This is the 13527th most frequent Turkish word.
koşanın
"Koşanın" means "of the one who is running" in English.
Here, 'koşanın' refers to 'the person who is running' in possessive form, indicating their speed.
Koşanın hızına yetişmek imkansız gibi görünüyor.
Catching up with the runner's speed seems impossible.
In this sentence, 'koşanın' represents 'the person who is running,' used within the structure of asking about identity.
Koşanın kim olduğunu öğrenmek istiyorum.
I want to learn who the person running is.
The word 'koşanın' here specifies 'the person who runs the fastest' as a unique identifier.