Next year the races fall a week later than they did this year so those New Years crowds will be completely gone.This year it was probably busier with more of the New Years crowds still hanging around as well as 2018 was a major race anniversary,25th anniversary and 5th Dopey challenge so races probably filled up more than they will next year.As far as getting around,the most issues will be on Sunday for the full which goes from Epcot to MK to AK,WWoS,DHS and then through the Boardwalk area into Epcot and finishing outside Epcot.This race has runners finishing as late as 1-2pm so just find out when and where you're going that morning and how the race will affect you,if you take the buses you dont have to worry about it but you might still see delays.Saturday the race is just Epcot to Mk and back to Epcot,the only main street impacted is World dr and the last runners will finish around 10:30-11am,still late enough that you should check on traffic to your location.The 5K on Thursday and 10K on Friday finish much earlier and will have little impact to day guests.