I did this 5K the day after the trail marathon with one of my kids. It was her first 5K. The course is an out and back and because it takes a bit to get on the trails, is probably about 50/50 road/trail. There are some hills, so don't think it's flat. TNF does a great job of putting on an event and it makes for a fun atmosphere, esp. for the kids where they get medals, shirts, socks, and bottles!!!