You need to contact a senior editor in the area of the event well in advance of an event if you want to ensure that Waze has the correct closures and possibly create a Major Traffic Event notification for drivers in the area.
One of the other State Mangers, Jr1982jr and I had entered the closures for the Baltimore Running Festival several days before the event. They were active for the Marathon and Fleet Week as well.
We'd like you to join our Maryland Editor's Google Hangout - there you'll receive more immediate response and support from local volunteers.
Re: Baltimore Marathon-DOT