New Balance 42k Porto Alegre
Race Day Weather
Comfortable temps, warming through the race
Mild 56°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 69°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. Moderate humidity at 74% is worth noting for effort level, especially in later miles.
Pace Calculator
Get forecast alerts for New Balance 42k Porto Alegre
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 New Balance 42k Porto Alegre race plan
True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
The New Balance 42K Porto Alegre is an urban marathon in Porto Alegre, Brazil, recognized by World Athletics and ranks as the 2nd best marathon in Brazil. The race starts at the Monumento ao Expedicionário and finishes at Parque Harmonia, winding through flat urban terrain past landmarks like the Centro Histórico, Monumento ao Laçador, and Estádio Beira-Rio.