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Ultra Runs & Marathons Brazil 2026 – Complete Race Calendar

Show all Ultra Marathons in Brazil

Ultrarunning in Brazil: An overview of Ultra Runs, Ultra Marathons and Ultra Trails in Brazil.

The dates for all Ultra Races in Brazil, including registration, course, schedule, results and more details.

Brazilian Ultra Runs: The Verticality of the Atlantic Forest

Ultra runs and trail events in Brazil present a unique, formidable challenge defined by intense humidity and the relentless, technical terrain of the Atlantic Forest (Mata Atlântica). While lacking the extreme altitude of the Andes, the coastal mountain ranges like the Serra do Mar and Serra da Mantiqueira demand massive cumulative vertical gain over short distances. Brazilian ultras require exceptional resilience to manage the persistent heat and humidity, combined with the technical mastery of slick, root-covered ascents and deep, muddy descents.

Serra Fina and the Technical Jungle Test

Events in regions like the Serra Fina or Serra dos Órgãos embody the country’s most demanding trail running. These routes plunge runners deep into the lush, vibrant jungle, where the dense canopy and wet soil create a constant battle against roots, slick rocks, and heavy mud. The key to success lies in maintaining hydration and managing effort in conditions that maximize physiological strain, even at lower elevations. The physical difficulty is balanced by the reward of running through some of the world’s most biodiverse and visually spectacular forests.

Whether tackling the sheer verticality of a climb near Rio de Janeiro or covering vast distances through remote inland trails, ultra-running in Brazil delivers a unique, tropical adventure. It is an endurance test where the beauty of the emerald green forest is matched only by the technical difficulty of the unrelenting, humid terrain.

To the overview of all Ultraruns in Brazil: