Hi Aaron!
Right now there is only one full marathon (26.2 miles) offered by runDisney. It is during Walt Disney World Marathon Weekend in January at Disney World in Florida.
There are several other race weekends offered:
Walt Disney World Half Marathon (during marathon weekend)
Tinkerbell Half Marathon (Disneyland, California)
Princess Half Marathon (Disney World, Florida)
Expedition Everest Challenge (a 5K/obstacle course at Disney World, Florida)
Disneyland Half Marathon (Disneyland, California)
Tower of Terror 10-Miler (Disney World, Florida)
Wine and Dine Half Marathon (Disney World, Florida)
You can find a full list of races and dates on the
runDisney website. There are also 5K races and Kids Races during all race weekends.
Please let me know if I can help you choose and plan for a race!