In the men’s race, over 10 kilometres, contested in hot temperatures, Souza triumphed in a time of 31min 46sec.

Second place went to Canada’s Thomas Fafard in 32:03, with Rene Champi of Peru third in 32:07.

Speaking about his victory Souza said: "I had never done this type of competition and I had the opportunity to try it.

"It all started in the regional stage, there in Bonito, I came to the Copa Brasil and was champion and now I won an international championship.

"I overcame all my difficulties and today I have a result for Brazil, Mato Grosso and my city Pontes e Lacerda."

In the men’s team competition, where the team with the lowest points total triumphed, Brazil won with 21 points, with Canada in second on 24 and Peru in third place with 39.

The women’s race, also contested over 10km, saw a Brazilian clean sweep, with victory going to Moreira in 36:21.

Second went to her compatriot Nubia de Oliveira Silva in 36:48, with the podium completed by another Brazilian Simone Ponte Ferraz in 36:51.

Speaking after her win Moreira said: "It was a good race, I managed to concentrate - when I was tired I believed and asked God for strength - I felt a little less difficulty than in the Copa Brasil, I ran more freely, imposed my rhythm and concluded the race well.

"I still can't believe that I'm an adult South American and Pan American champion, that I made it."

In the women’s team event, also won by the nation with the lowest points total, Brazil were victorious on 10 with Canada in second on 30.

Only countries with more than four athletes in the competition could score in the team standings.