2016 was the second time I ran the ColderBolder. It runs through the UC-Boulder Campus which is not the most scenic but provides some great twists and turns throughout the course. Makes it interesting. It is in the beginning of December so you never know what the weather could be like. 2016 it was cold but not too chilly and 2015 was gorgeous and sunny.
It is not a large group who run this race but get some of the same craziness and silliness of the BolderBoulder. Perk of running the BolderBoulder is you get early access to run this race. Few aid stations on the course, but when it is so chilly, it is hard to stop for water. It ends in the field house with a chance to win some swag if you run.
Well organized much like BolderBoulder. Swag is a t-shirt and a winter hat which I wear all the time for running.