Amazing race! In 2021 when in person races are coming back this race is a must do!! Chicago is amazing overall. The crowds in Chicago were everywhere cheering you on and motivating you throughout the 26.2 mile course. The race 2021 was a little warmer than normal with the humidity in there too. Overall good course. Water stations about every 2-3 miles. A lot of aid stations towards the end of the course when you need them the most.