Yes this is COMPLETELY subjective, but what is your favorite Ironman race worldwide?
That is way too hard to answer. I have done LP, WI, and FL. LP is my favorite. Great place to visit, great people. A little pricey, but so is the entry fee. I would love to go to Lanzarote and/or Austria.
The one you finish fastest.
Or possibly the first one you finish…
Quelle Challenge Roth. Not subjectivity here. It’s the truth I speak! 
Climb Solarer Berg once and you’ll know why.
Each race has something different to offer…which is perhaps why they have so many, and growing.
For me, I still like Florida. It was my 1st…
New Zealand
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Having done only one so far, I gotta agree that it’s wherever you finished your first one. With that in mind, it’s always gonna be Kona for me. I’ll have to see how IMAZ compares in April…
I’ve done IMC, IM Europe (Quelle Challenge Roth), IMFL and Hawaii and still find IMC to be my favourite. It was the first one that I did and unlike Tom’s criteria it was only my 3rd fastest of the 4 
The volunteers and atmosphere in the town are second to none and the course is awesome. I really enjoyed the climb up Solar Berg as Francois mentioned and someday I’ll go back and do that race again.
Have race IMLP , IMFL, IMMOO, IMG-ROTH, IMG-Frankfurt, GFT
My favorite race is IMG-Frankfurt
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