It can't be THAT popular if it's not sold out and RunDisney is offering registration discounts AND swag giveaways at race expos around the country.
That's basically the long and short of it. Neither weekend is sold out, so clearly the demand (coupled with the price point) is not there at this point - not just with the Star Wars races, with RunDisney races in general. SW races are just far more noticeable because there are two of them that aren't sold out. On top of that, the inaugural WDW was such a disaster, they seriously knee-capped themselves on repeat registration - legacy doesn't have to privileges it used to and if you only have one race in your budget, why would you re-race one that was a disaster?
In defense of the "lady race weekends", you don't see much conversation about the interest in those because a nuclear bomb could hit WDW and Princess would still sell out.
In a RunDisney market that is already oversaturated and overpriced, two wide open (and discounted) weekends sharing the same theme is definitely a head-scratcher.
FOR ME - I will never pay to do a Star Wars race. I don't know a thing about Star Wars, I haven't watched the movies nor do I have interest, I wouldn't wear the shirt or anything. I love RunDisney races, but I'm not waking up to do a Star Wars race - even if it's free. And I know I'm not alone in that thinking. Star Wars is a 100-percent non-starter for me. Not even at
Disneyland where I prefer the courses.