Hi Jenna!
Thank you for bringing your question to the Disney Parks Moms Panel!
Walt Disney World Marathon weekend is a great weekend for runners! With so many events, there is truly something for everyone.
The Health and Fitness Expo hours have not been finalized for 2017 yet, but you can usually count on the expo staying open until 7:00 p.m. (Eastern Standard Time) on the night before the 10K. Sometimes it will be open until 8:00, but I would say 7, just to be safe.
When making my travel plans, I usually plan to arrive in the morning if I come in the day before my race. That gives me a little flexibility in case my travel gets delayed.
You'll be able to find the expo hours soon on the
Walt Disney World Marathon website, under the RUNNER INFO tab.
I hope this helps! Please let me know if you have any other questions.