1. A literal path or trail that is poorly lit or obscured by darkness
We had to navigate the dark path through the forest at night.
Tivemos que navegar a trilha escura pela floresta à noite.
2. A figurative reference to a dangerous, immoral, or unethical course of action
He went down a dark path when he started dealing with criminals.
Ele seguiu uma trilha escura quando começou a lidar com criminosos.
3. A difficult or troubled period in someone's life
After his divorce, he found himself on a dark path.
Após seu divórcio, ele se viu em uma trilha escura.