Important topic. A runner of the team posted a picture with best times of a national runner reminding of the local history of best 10K runners in the country's history: you don't need to be a vegan freak, you can just as well drink mate and have "tortilla frita" and beat everyone's ass. Curiously, a couple of nowaday vegans rescue the value of using the produce you have near your area, including thhe popular south american yerba mate.
He was referring to Antonio Silio, who has an organization to make a marathon: Desarrollos Deportivos. Also, there's plenty of material on the athlete online: