This is easily the most challenging marathon I've ever run. Normally the weather will either be rain, or warm and humid. The course is also challenging (600+ of elevation gain). Most of the elevation gain comes in the second half of the race.

The course is well marked. The crowd in Louisville is fantastic. The aid stations are well stocked. The post-race food/drink is more than enough to start recovery. Pace groups are readily available and ran by very capable runners. The t-shirts and medals are normally really cool.

Half marathon course is extremely flat and fast. If you're looking for a Half PR, this is the race for you. If you're looking for a challenging marathon that will leave exhausted, this is the full for you.