Rio de Janeiro Marathon

Registration is open to all runners through the official race website. Bib numbers are limited, so it is worth signing up early once registration opens.

Yes, the course is an officially recognized Boston qualifier. Keep in mind that heat and humidity in June can affect finishing times, so factor that into your pacing plan.

The race has a six-hour time limit.

The course is a loop starting and finishing at Flamengo Park, running south along the coast past Copacabana and Ipanema. Elevation gain is modest, with no major climbs, but the cumulative rolling terrain combined with heat and humidity means it is not a course to take lightly on pace.

Race day in early June typically brings temperatures ranging from the mid-60s at the start to the upper 70s later in the morning. Humidity is a consistent factor and will make the effort feel harder than the temperature alone suggests. Plan to hydrate early and often.

Recent editions have seen roughly 13,000 finishers, making it a large event with a strong international field.

No, the Rio de Janeiro Marathon course is not USATF certified. It is still an accepted Boston qualifier, but runners who need a USATF-certified course for other purposes should check the relevant standards.