3 of the 4 routes are exactly the same (January WDW Marathon Weekend, Princess, Star Wars Dark Side). We don't know the route for Wine & Dine's 5K yet, but I assume it'll also be the same - through Epcot.
A few things to think about...
- The January 5K is on a Thursday, while the others are on a Friday
- Does any month of the year work best for you (January - bigger weekend with 4 big races going on, February, April - spring break crowds and very warm weather, November - Food & Wine Festival/Veteran's Day weekend)?
- Theme - they are re-theming the Wine & Dine 5K so we don't know what characters will be out. January would normally be more classic characters (Pluto will be the finisher medal and shirt), Princess would likely be characters from Princess movies, Dark Side would be Star Wars characters
- Similarly, theme will also dictate what the participant shirts and finisher medals look like