I did the half marathon the year after I did the 10k. Many things are similar, but I believe that it's set to change in 2017. However, the post race was my favorite part still, and I hope that doesn't change! They give out flowers because it's the spring half, the course is on the lakefront (duh; it's a Chicago race) with those classic gorgeous views, and the breakfast is huge! The half marathon goes first and the course is straightforward (though I think it will also slightly change in 2017). Super flat and an out and back. Coming back to do it in 2018, so we'll see how the new course is!