Registration for Disney Wine & Dine Half Marathon Weekend will open on Tuesday, March 20, 2018 at noon EST

Stats from AP/DVC early registration (thanks to Chris Mel for these stats)
12:00 EDT - registration started
12:19 EDT - 5k first "on hold"
1:18 EDT - 10k first "on hold"
~1:30 EDT - probably 5k sold out time
2:18 EDT - 10k officially "sold out"
2:28 EDT - 5k officially "sold out”
My advice is to be ready to register as soon as
it opens.