Maratona do Rio (Rio de Janeiro Marathon)
Race Day Weather
Comfortable temps, steady tailwind
Runners will face a temperature range of 63°F to 72°F, with humidity at 74%, requiring a conservative start. A light tailwind up to 6 mph will aid performance from miles 1 to 17, but crosswinds at miles 18, 20, and 22-27 may challenge runners. Hydration should be prioritized due to the humidity, and pacing adjustments should be made, especially during the climbs at miles 10 and 13.
Pace Calculator
Get forecast alerts for Maratona do Rio (Rio de Janeiro Marathon)
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Maratona do Rio (Rio de Janeiro Marathon) race plan
Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
Maratona do Rio, established in 1979, is Brazil's top city marathon, starting at Praia da Reserva and finishing at Aterro do Flamengo. The course treats runners to iconic views of Copacabana, Ipanema, and Leblon beaches, with a rolling profile and moderate hills totaling about 280 meters of elevation gain. Its road surfaces take you past scenic landmarks like Sugarloaf Mountain and Christ the Redeemer.