As per the title, made it to the Galactic Core which for the benefit of those who don't play the game, is a long way from civilisation and consists of a rather large Black Hole!
Of course getting there is only half the story, you need to come back which using normal travel works out at in excess of 700 jumps back to Sol or about 25000 light years.
Stuff that! Now using the neutron star system which is a bit more perilous but reduces travel to a more manageable 200 jumps although not necessarily 3.5 times faster as it takes longer to set up the jump and you need to break periodically to get fuel from a main sequence star.