I dunno, there is a half ironman in May. Since the announcement is April, I expect the race to be April. There is a new phenom popping up, a 26.2 kilometer race, or a metric marathon.
I am looking at the property to see how one could break it up and bring in new venues. I think it would be cool to run in Blizzard Beach again. We did it in the marathon pre-AK and Disney made it snow for us.
So, Assuming...
Florida
A tie with the Flower and Garden
April
What character will be the official sponsor of the event?
We can rule out Mickey, Minnie, Donald, Goofy, Chip and Dale and the Princesses.
Pluto comes to mind. One could tie the DVC properties in with the race.