Where, by touring the land, one may have shot to success (6)

'one may have shot to success' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'where by touring the land' is the wordplay.
I cannot quite understand how this works, but
'land' could be 'isle' (isle is a kind of land) and 'isle' is located in the answer.
'by' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?