I remember starting one that was about 0.16ly (so shorter than the hutton run) near the core but I gave up after about half an hour. A box I probably should tick on my next jaunt out into the black.
I started a planetary circumnavigation for Alex's thread but the requirements for posting the evidence to verify it was more effort than I wanted to do at the time (it was that really small moon in the Pleiades), again I gave up on it. I have driven over 16,000km total in the SRV though.