The most common and most likely answer to this crossword clue is the 4 plus 4 letter word HIGH JUMP
I've seen this crossword clue in Independent
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More clues leading to the result HIGH JUMP
- School mostly nervous delivering event with a bar
- On a trip before spring event
- Event in trouble for it?
- Austrian showed the sky’s the limit in this Olympic event
- Having taken drugs, start field event
- One might be for this athletics event
- Athletics event you wouldn’t get over losing
- Intoxicated judge and posh politician in event with bar
Buddy explains!

The straight part
We know that "event with bar" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case event with bar = high jump.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.