I did it this year, fairly flat course , last 4km on a slight incline. Takes on all the sights of the city. Start and finish area is excellent as was the expo. Was a little cool this year probably not even 10c.
Downside is with it being 1st week of March you have to train through the winter, which was a bit of a problem due to the ice and snow we had. Did a few runs on treadmill which is not ideal.