Here’s from the @Bryancd 's thread weeks ago:
My prediction is 1 day in Kona because “Kona”. It doesn’t appear IM is ready to move on from Kona as their WC and the biggest race of the year. And I don’t think the town is willing to accept 2 days. Could the town change their mind in a year or two? Potentially.
Men’s IMWC switching from Nice to Kona in 2025 (rumour)? Would Kona authorities/community be up for consecutive Saturdays?:
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This is the only way IM will get back to both IMWCs in Hawaii.
Races on successive days is out (even if ‘they’ could roll the Kona devout over for a Sunday) even with Dev’s harebrained ‘reduce the time limit’ schemes: the volunteer load (and indeed the working hours for paid staff) make this ‘literally’ impractical.
And weekdays are out.
Sensible way ahead is to move the IMWC to a place which can manage two days 30 hours apart for (say) 5000 athletes (uneven split), preferably on a rolling basis of maybe four fantastic venues.