Maratona Aquática Internacional de Santos (International Aquatic Marathon of Saints) is a multi-race open water swimming competition held annually in July in Santos, Brazil. It is a 1 km, 2 km, 4 km and 10 km ocean course with occasionally rough water off Boqueiro Beach of Santos. It is a very competitive professional marathon swim that attracts top swimmers from around the world to the FINA 10KM Marathon Swimming World Cup race which is preceded by popular 1 km, 2 km, 4 km races for amateur swimmers. It offers US$20,000 in prize money as part of the global FINA 10KM Marathon Swimming World Cup professional circuit and is one of the World’s Top 100 Open Water Swims.