
The marathon weekend is in January. If you are referring to the Wine and Dine half marathon weekend in early November, then I can tell you that it doesn't affect the parks too much, though that is nearing the end of F&W, and the weekends at EPCOT are much busier then. Last year, there was a runner's party in EPCOT Sunday at night, which started at 10:00 PM. As soon as Illuminations ended, they closed down all the F&W kiosks and rides to get the park guests out. Many runners arrived earlier so crowds were pretty busy between 7 and 9. There is limited effects on traffic in the early morning, mainly at EPCOT.We are coming during the marathon weekend in November and staying at BC and would be interested knowing how impactful the marathon and F&W at Epcot will be.
The marathon weekend is in January. If you are referring to the Wine and Dine half marathon weekend in early November, then I can tell you that it doesn't affect the parks too much, though that is nearing the end of F&W, and the weekends at EPCOT are much busier then. Last year, there was a runner's party in EPCOT Sunday at night, which started at 10:00 PM. As soon as Illuminations ended, they closed down all the F&W kiosks and rides to get the park guests out. Many runners arrived earlier so crowds were pretty busy between 7 and 9. There is limited effects on traffic in the early morning, mainly at EPCOT.
you are going to experience two issues: first is that schools have not returned yet, and it is the extended New Years Week, which if anything like last year, means that the parks were very crowded. This will make more of an impact than the races. The runners that are there for the races do not have a huge impact on the parks, just a slight uptick as many make it a parks vacation too. The days of the races for Thurs/Fri/Sat do not really do much to get in the way of park goers. The races all start early 5:30 or 6:00, and the 5K and 10K are basically finished by 8:00. The half marathon on Saturday will be done by 10 or 10:30ish, and it really only effects EPCOT as that is the finish area, though it doesn't get in the way of normal parking, and only modifies some of the roadways coming in to the park. There may be some minor waiting inside the park if you are crossing over the course, but the CM's shuffle people through pretty consistently. For the marathon on Sunday, there is a bit more in the way of roadway issues, but those are still only in the morning. The issues inside the parks are still only with EPCOT as that is the last park on the route. The runners get through MK first typically and are all out of there prior to park opening.Yeah well that's it. We're going in January, which is when I'm very concerned about.
It will be busier than most years because it is closer to NYE than usual. The Epcot resorts always book up for this event, but the crowds are not going to be higher because of the Marathon. They will be higher because more students do not resume school until after that week.Okay, but isn't the Marathon *around* epcot? Wouldn't it be better to avoid epcot altogether?
I guess I'm worried because, as a DVC member, *all* the resorts are now basically *completely booked* for that weekend. That tells me it's going to be a busy weekend! (January 5-6 )
Saturday is going to be one of those busy days at all the parks based upon the fact that many who have come for New Years it will likely be the last park day. Sunday would be the start of many new arrivers park days. No telling if MK will be super busy (it usually is on any given Saturday). You might find Sunday morning rope-drop at MK or other park is going to be the least busy time you see (many Sunday mornings are the least crowded in my experience), and EPCOT is fine if you want to go late morning or afternoon. All those who just did a marathon are not likely to be right back in the parks, as most take a rest and come back for late afternoons and early dinners, though not all. If it was like this past year, the days after marathon weekend were lighter than almost any other time of the year.So if we ARRIVE on Saturday the 6th around lunch time, it wouldn't be a huge deal to go to the Magic Kingdom then since it will be after lunch? We usually like to do MK on arrival day, but have never visited at this time of year. And I guess avoid EPCOT on sunday the 7th...
Okay, but isn't the Marathon *around* epcot? Wouldn't it be better to avoid epcot altogether?
I guess I'm worried because, as a DVC member, *all* the resorts are now basically *completely booked* for that weekend. That tells me it's going to be a busy weekend! (January 5-6 )

Yeah well that's it. We're going in January, which is when I'm very concerned about.
As a PP pointed out, there is only ONE marathon weekend, and that is in January. runDisney currently has 3 other event weekends at WDW, all of which have a half marathon as the longest race. Several of the halfs have different courses, but most have minimal impact on non-runners as long as you pay attention to the information WDW provides, and allow extra time to get places during race hours.
Don't be. Avoid any early morning bookings at MK and the MK area on Sat/Sun and you will be fine. World Drive going under the water bridge is a one lane road until about 30-45 mins before MK opens, so traffic can get very backed up in that area causing heavy delays until the second lane opens. Other than that, there is minimal impact upon other guests. Yes, for Marathon Weekend in January the races start and finish in the Epcot parking lot. But the 5k and 10k (Thurs and Fri) are both essentially done before the park opens, so other than the infrastructure in the parking lot, you won't even know something happened. Sat, the half is through MK before the park opens, and only goes into Epcot for the last mile or so while Epcot opens. Pay attention to the cones and the CMs, and don't cross back and forth between TT and the Land and it's not a big deal. Sun with the full runners will be in AK, DHS and Epcot while the parks are open, and there will be road closures between the three that will affect traffic getting to/from the parks. (MK is done pre park open, and most of the way from MK to AK is in CM only roads) Once again, allow for a bit of extra time for travel using WDW transit when possible, and pay attention to cones and CMs. Park attendance won't get that much of a bump from runners. Booking hotels at that time are hard as they will fill up for marathon weekend itself from runners (especially DVC), but will often have occupancy before and after. Resorts will be full, and non-park dining will be full. But the parks themselves won't be extra crowded due to runners. The crowds may be higher based on when schools go back, and that has a much greater impact than runners.