Crossword Genius

Aiming to, on starting the journey (7,3)

Ross

I believe the answer is:

setting out

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

'starting the journey' is the definition.
'setting out' can be an answer for 'starting' ('set out' can be a synonym of 'start'). I'm not certain of the 'the journey' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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