I would say around 500 kls... not sure i went farther than that.
And you still had to hyperspace to actually go to the nearby system.
0.46ly
Found two star systems unusually close to each other: only 0.46ly! And decided i will try to reach that nearby star by flying in supercruise. Took me few hours...
Have a peek at Sigma Orionis on your way back to the bubble...Yesterday I made a 518 kls run out to a brown dwarf just to get a tag. I don't have the exact location but it was somewhere in between Darwin's Research and Witch Head Research, just west of Col 70 region. Call it a warmup before I head back in to Hutton.