Which preposition to use with karachi

TO Occurrences 2%

KARACHI TO ABBOTABAD IV.

on Occurrences 1%

It took about five weeks to do the journey, and the rifle which I was obliged to leave in Karachi on the 19th of March finally turned up in Srinagar, after an infuriating and vain expenditure of telegrams, on the 1st of May!

Which preposition to use with  karachi