1k swim in prestine cedar lake water. The course is marked with numerous orange bouys, lifeguards, row boats, paddle boats, motorboats, the rescue/dive team...The 40k bike follows the swim. These roads are closed to vehicular traffic and is an out and back on a flat course. The 10k run is the final leg which wraps around the residential community. Mile markers every mile and there are at least 7 waterstops on the course.