Maratona Desafio do Barreiro is a race held in late November in Araxá, Minas Gerais, focusing on the Barreiro area. Recent descriptions identify it as a trail running event, while an older listing calls it a street race. Runners should anticipate a local race format that might differ by edition or distance, rather than a standard road marathon.
The event offers 42 km, 21 km, 10 km, and 5 km distances, starting on Av. do Contorno. RN Sports is the organizer. Recent editions have spanned more than one day, with a distinct "2nd Day" event mentioned. The series has progressed through its seventh, eighth, ninth, and tenth editions.