Monotonous run for the jockey? (8)

I believe the answer is:

flatrace

I'm a little stuck... Click here to teach me more about this clue!

'jockey?' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'monotonous run for the' is the wordplay.
'monotonous' becomes 'fla' (I can't justify this - if you can you should believe this answer much more).
'run' becomes 'race' (synonyms).
'for' says to put letters next to each other (I've seen this in other clues).
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'race' after 't' is 'trace'.
'fla'+'trace'='FLATRACE'

Can you help me to learn more?

I've seen this clue in The Irish News.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.