The western-most Games venue will stage a 50 kilometres men's senior race which will give athletes the chance to test the Olympic circuit.

Forty organising committee staff will work alongside colleagues from the Brazilian Athletics Confederation along the course, which features a new asphalt surface.

The main areas tested will be the operations centre, course markings, technology and security.

Part of the South American Championships, the event will also feature two Chinese walkers, Hu Yang and Mingli Wang, and Albery Mukwa Ngambene from the Democratic Republic of Congo.

Among the four Brazilian entries are Cláudio Richardson dos Santos, a ten-time winner, while Colombia, Ecuador, Venezuela and Peru will also be represented.

The race will begin at 6.30am in order to avoid the most severe heat of the Brazilian summer.

Racing at sea level in such temperatures will not offer a realistic chance of gaining the Olympic qualifying standard, although fans will be able to get a taste of what the Games will be like.

The three race walk events at the Olympics, the men's 20km, women's 20km and men's 50km, will be open to the public without tickets.

The Brazil Race Walk Cup will also allow spectators to watch for free in this manner.

"The public will be able to come and get an idea of how things will be during the Olympic Games,” said Rio 2016 athletics manager Martinho Nobre.