Meaning of the word "the longest mile is the last mile home" in English

What does "the longest mile is the last mile home" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

the longest mile is the last mile home

US /ðə ˈlɔŋ.ɡəst maɪl ɪz ðə læst maɪl hoʊm/
UK /ðə ˈlɒŋ.ɡɪst maɪl ɪz ðə lɑːst maɪl həʊm/
"the longest mile is the last mile home" picture

Idiom

the final part of a journey or task often feels the most difficult or takes the longest because of anticipation or exhaustion

Example:
I've been working on this project for months, but the longest mile is the last mile home.
We are almost finished with the hike, but remember, the longest mile is the last mile home.