Flat Water Races (FWR) are typically held on ponds, lakes, and well-protected marine bays.  FWR courses are designed to minimize environmental factors, which enables competitors to focus the majority of their attention on physical performance. 

Swift Water Races (SWR) are normally held on Class I rivers, as opposed to higher-class rivers featuring whitewater features and obstructions.  Some SWR courses include upstream and downstream sections, while other courses are unidirectional in design.

Protected Water Races (PWRs) introduce environmental and logistical factors into the competition context, often including wind, waves, tides, currents, boat traffic, shuttling/transport, and more.  PWR courses are a great way for paddlers to experience open water conditions in a relatively safe setting.

Open Water Races (OWRs) test COR paddlers on all of their abilities -- physical, mental, emotional, and technical.  Due to their exposed nature, OWR courses require a level of competency and fitness beyond what is required for flat water, swift water, and protected water competitions.  Aside from on-course safety boats, OWR participants are expected to be self-sufficient and able to manage incidents and emergencies on their own.

Downwind Races (DWRs) are the true domain of the ocean ski.  DWR courses are typically held on the open ocean, although a few involve very large lakes and unique river settings.  DWRs often feature an event window allowing organizers to select the optimal day based on wind/wave alignment and other factors.  Major competitions such as National Championships, Continental Championships, and World Championships are normally downwind races.