This one of, if not THE BIGGEST, half marathons in the USA. There are a TON of people but the race organizers are well prepared and keep things moving smoothly. Running around the speedway is amazing, and getting to "kiss the bricks" is an experience. The year I ran it, they had the big screens on showing the winners finishing as we were running in the speedway. I'd definitely recommend it to anyone in Indianapolis, which was a great city to visit and run in!