If we do avoid using Bucky/Buckyball in the name, then I do like Macros' suggestions, especially NasStar.
Does that mean that I'm Rednecky? As a European I've only ever watched a couple of Nascar races, but I enjoyed the Piston Cup in the Pixar Cars movie!
Ideas for races... have two. Maybe it's just the radiation sickness from wading through the neutron star field, but here's a couple of ideas.
1. Go far. That's it. In some amount of time (6 hours? 12? 24? A week?), how far can you fly from Sol? Bonus condition: If anyone runs into Thargoids, whoever runs into them first automatically wins, regardless of distance.
2. Mini-Desert Bus, also known as the "Gee, you think you're overdoing this trade run?" race. Take two stations about as far apart from each other in known space as you can get. How many times in a given week can you make the run between them? (I would have suggested Sol/Sadge over and over - a true Desert Bus scenario - but that would have been a bit extreme.)
Nice ideas, but for myself other than for the BBRA I really couldn't manage to find the time for a long endurance race, so I'd probably only enter races that are 30mins to 2 hours long. My rares race will likely take an hour or so, and I'm planning to enter the next St Valantine's Day Regatta (I was too ill last time) which took a couple of hours I think - Drakhyr won the last regatta, so he'd know how long it was!
That would be about my limit for length. I'd also struggle badly to manage to play every day during the week. I've really had a difficult time managing to fit in my BBRA runs, for the one last weekend I didn't sleep between Saturday morning and Sunday night as I was too busy during both days to fit even a quick nap in and I needed to do my run through Saturday night. I wouldn't have bothered if it hadn't been for the fun of challenging Drakhyr and mjmw after we'd chatted and helped each other so much.
I love the regular Buckyball Runs so much, because it's easy to find a couple of hours in the evening, on a few nights over the two weeks to get some runs in.
One long range race idea that you have given me though would be a "galactic rally."
The Galactic Rally:
Split the race into stages, so say Stage 1 could be Wolf 359 to The Coalsack via HIP 63835; then Stage 2 could be from The Coalsack to the Eta Carinae Nebula via the Statue of Liberty Nebula. And so on until you end up back in a station in settled space. Keep the route to the real nebulae on this side of the core, rather than using procedurally generated ones and it will include some spectacular sights.
Each stage could be completed in 30mins-2hrs in a Conda/Asp/T6/DB/Hauler, and they'd have to be done in order, but with a whole calendar month to complete the race, so you can find time to race regardless of how busy you are in real life.
By picking a start and finish, but directing racers through a single system midway you can ensure a navigational challenge (which EZ always manages somehow). For example HIP 63835 is specactular system and a minor navigational hazard (especially for inexperienced explorers); The straight route between the Statue of Liberty and the Eta Carinae Nebulae is a desert of brown dwarfs that makes Aucoks seem like refuel-central; The awesome NGC 7822 Nebula is close to the bubble but very hard to reach, the route mapper picks a very crooked route over the last 1000LY, so a skillfully plotted manual route with careful fuel scoop management could probably knock several jumps off an autoplot route.
There are loads of Aucoks type regions, navigational hazards and nebulae listed in the community mapping project, so I'm sure that we could plot out a spectacular tour of our side of the galaxy split into challenging stages.
(BTW: I've still not managed to visit the Crab Pulsar, so we're going there if I end up planning the stages!)
EDIT: Someone better with words than me could probably think of a name based on the Gumball Rally for this race.
EDIT2: Link to Erimus' Galaxy Mapping Project, for those who haven't seen it:
https://forums.frontier.co.uk/showthread.php?t=116450