Hi Deborah!
Thank you for bringing your question to the Disney Parks Moms Panel.
You are correct that one of amazing benefits to being a
Walt Disney World Annual Passholder is that you are able to register for runDisney events in advance! The dates for regular registration and the early date for Annual Passholders can be
found on this page, which I bookmarked because it can be tricky to find!
For example, the next race registration that will be opening is for
Disney Princess Half Marathon Weekend. This goes on sale to the general public on May 2, 2017 at noon EST, but Annual Passholders will be able to access early registration on April 27! You'll see on that page that it states that you can register early "on the applicable Early Registration Start date and can be accessed on the exclusive runDisney Passholder page." If you click their link for the
exclusive runDisney Passholder page it will currently take you to the main page for runDisney. Once registration opens for Annual Passholders though, it will take you to a different site where you can register early!
Good luck with registration and I'm sending pixie dust your way for a magical race! Please let me know if you have any other questions.
-Lindsey ºOº