The calm waters sheltered by the headland of Fort Copacabana will provide the courses for the Olympic marathon swimming and the swimming sections of the Olympic and Paralympic triathlons. The Olympic triathlon running section and the para-triathlon running and cycling courses will stretch along the waterfront, while the Olympic triathlon cycling section will start and finish at Fort Copacabana, passing through Cantagalo and Lagoa. The cycling road race will start and finish at Fort Copacabana, stretching out to Recreio and Prainha, and the Paralympic marathon will also start and finish here.