If you enjoy Christmas decorations, cheering crowds, people dressed up in all manner of Christmas attire, and running with a large group of people, you'll love the Tacky Light Run. I've run it the past two years, and I highly recommend it. But you have to understand that it's a fun run - NOT a race. It's not timed, and it's silly to try to run it fast anyway, because you'll trip and run into people and miss out on all of the amazing light displays. It draws a big crowd, but is very well managed.
It begins at a park and runs through a neighborhood where most of the houses are decorated AMAZINGLY and the entire neighborhood is outside partying and cheering the runners. There's one water stop where they also have Christmas cookies, and they serve cookies at the end, but they also have a food truck and beer. The medals are awesome and can be used as Christmas tree ornaments, and this past year the swag included a very nice red and green Tacky Light Run stocking hat.
Logistics are a little bit difficult because you either have to walk a long way to the start or park in one of the shuttle lots and take a shuttle, but the enjoyment far outweighs the hassle factor. Last year I parked at the Urban Farmhouse and walked about a mile to the start, which wasn't a good idea because I got very cold walking back to my car after the race. This year I took the shuttle from one of the satellite lots and it went very smoothly without much waiting around.
The distance is ~3.8 miles and there are a few hills (elevation gain of 194 feet).