目標は市内大会で優勝したいって英語でなんて言うの？

example "I am determined to win the Kendo tournament in my local city this year." or "It is my goal to win the Kendo tournament." or "It's my ambition to win the Kendo tournament this year in my city."

To 'aim' for something is to have a target or goal which you intend to achieve. You will do everything that you can to ensure that you reach your goal. 'Aim to win' is a common phrase used when you enter into a competition and you really want to win and come first.

When one is so determined to win, one expresses it in such a fierce way. As far as he/she is concerned, the word "losing" just isn't in their vocabulary. There is no other alternative-winning is not a must. It's the only possible outcome.

Of course you could use phrase 1 and state your goal in that way. However, equally effective is sentence 2, which also expresses a high degree of determination to win. In English, when speaking about events which require a vast amount of dedication and effort, it is often part of the competitor's psyche and training to be both confident and assertive when speaking about goals. Sentence 1 is a little bland in that respect.

If you 'aim' to do something then you try hard or have a goal to achieve something An ambition is when you have a strong desire to acheieve something

The two sentences you see provided above are great ways to express to your listener that your goal is to win the city kendo tournament. In the first sentence you will see the term have one's eye on something. This means to be focused on something in particular. This term is commonly used in our everyday conversation, it would make a great addition to your vocabulary.

A 'goal' is something that someone is hoping to achieve. You must put the 'my' determiner in to show that you are the person who is hoping to achieve this. "to win" is the verb used in this case as your goal is to come first. And 'tournament' is another word for competition (it is usually used when there are a lot of competitors).