RunDisney has all spectator info listed on their page:
http://espnwwos.disney.go.com/events/rundisney/wdw-marathon/#pip-5
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Walt Disney World® Marathon Weekend presented by Cigna
Spectator Resources
As a spectator, you play a huge part in supporting your runner by cheering them on and motivating them throughout their training. Below is a guide to help you watch your runner during their magical race at the Walt Disney World® Marathon Weekend.
The Online Planning Tool is designed for spectators to plan their route along the race course so they can see their runner at key milestones. The ChEAR Squad offers several spectator packages from reserved viewing areas to VIP treatment in the Race Retreat.
Make sure you read the helpful tips on arriving to the race and parking on race day as well as the additional information about viewing your runner in the Walt Disney World® Theme Parks.
ChEAR Squad
Be a part of the Walt Disney World® Marathon Weekend when you join the CHEAR Squad!
CHEAR Squad packages are available for purchase and include:
Marathon Weekend E-newsletter containing information for race weekend
Reserved viewing location at the Finish Line
Much more!
For package details and to sign up to be a ChEAR Squad member, visit the ChEAR Squad page in the Event Overview section.
Runner Tracking
Family and friends will be able to track participants with live online runner tracking for the half marathon and marathon. Participants will have the opportunity to send split times via email and text messaging by registering for this service on the website. You can also sign up for runner tracking at Disney's Health & Fitness Expo.
Check back later for runner tracking information.
Parking
Athletes and spectators should plan on arriving at Epcot® by 4:00 a.m. on Half Marathon or Marathon race morning. The main entrance of Epcot® from World Drive will be closed to all traffic from 5:00 a.m. to 7:00 a.m. on the mornings of the Half Marathon and Marathon. All traffic will be directed to the Magic Kingdom® Park Parking Lot where they will be transported to Epcot® via monorail. Traffic will not be affected for the Disney Family Fiesta 5K featuring the Three Caballeros race.
Parking at Epcot® is free before 7:00 a.m., and if you arrive afterward, you will be charged the daily parking fee.
Viewing Your Runner
You can view your runner in a number of different areas along the Marathon and Half Marathon course including the Walt Disney World® Theme Parks and the Finish Line area.
Magic Kingdom® Park
Spectators will be able to see their runner run through the Magic Kingdom® Park near Cinderella Castle (Mile 5.3 for the Half Marathon and Mile 10.5 for the Marathon). This location will be open at 5:30 a.m. You do not need a ticket to enter the Magic Kingdom® Park, but to enter the ChEAR Zone area, you will need a ChEAR Zone wristband.
To reach the Magic Kingdom® Park spectator area from Epcot®, walk from the start of the monorail station at Epcot® and ride it to the Transportation and Ticket Center. Exit the monorail, walk down the ramp and follow the overhead signs for the monorail to Magic Kingdom® Park. Ride the monorail to Magic Kingdom® Park and exit the platform heading towards the Magic Kingdom® Park entrance. Proceed through the entrance and Main Street U.S.A. toward Cinderella Castle, where you will find the spectator area.
Other Walt Disney World® Theme Parks
If you want to watch your runner in another Walt Disney World® Theme Park, you will need to purchase a Theme Park ticket once that park is open for the day. Transportation to these parks is available through the monorail and bus system at the Walt Disney World® Resort.
Finish Line
Spectators can see their runners again at the Finish Line. There will be a limited number of complimentary seats along the Finish Line available on a first-come, first-serve basis. Reserved seating is available for purchase through our ChEAR Squad.
The Finish Line is located in the Imagine Lot of Epcot®. To reach the finish line from Magic Kingdom® Park, take the monorail back to the Transportation and Ticket Center. Exit the monorail and follow the signs for the monorail to Epcot®. Ride the monorail back to Epcot® and upon arriving, walk down the ramp and exit to your left towards the parking lots. The Imagine Lot and Finish Line area will be on your right.