How do you get from Universal Orlando Resort to Walt Disney World?

You will have to either drive/rent a car or take a taxi or bus to get there. There is no monorail station that will take you from Universal StudiOS to Walt Disney World because Universal StudiOS is not related to Disney World.

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Depending on where you're staying, if it's a Disney property/resort, they might provide a shuttle to and from Universal. I stayed at Shades of Green in 2014 & there was one bus that went to Universal. There was only one that left at 9 & returned at 6 if I recall so if you missed it you were out of luck.