Building race courses on planets may not be practical due to different gravitates and structures needed, so why not use augmented reality.
simply buy a racing computer module and go to a location where there is a race track, this may be marked with a tower/structure you can scan. once you scan the structure, you get the race track data displayed as an augmented overlay on your screen.
This over comes such problems as height flight levels on a race circuit, as it can be overlaid on the visuals (and flash up a timer warring if you go over it). Check points, start line, even the track its self could be displayed with simple wire frame overlays, bypassing the issue of believable structures floating around and the need for huge sign post to show the player where to go, it also cuts down on visual lag from the need of so many objects.
A race computer could also be used in open space, with commanders dropping into normal space and lunching a race beacon (that could open up a whole need commodity of trax
), which a player can scan, and a race can start 
simply buy a racing computer module and go to a location where there is a race track, this may be marked with a tower/structure you can scan. once you scan the structure, you get the race track data displayed as an augmented overlay on your screen.
This over comes such problems as height flight levels on a race circuit, as it can be overlaid on the visuals (and flash up a timer warring if you go over it). Check points, start line, even the track its self could be displayed with simple wire frame overlays, bypassing the issue of believable structures floating around and the need for huge sign post to show the player where to go, it also cuts down on visual lag from the need of so many objects.
A race computer could also be used in open space, with commanders dropping into normal space and lunching a race beacon (that could open up a whole need commodity of trax