Buenos Aires Marathon 2026
Buenos Aires · September 20, 2026 · 14,215 finishers
- Where the field cracked
- 35 km
- Negative splits
- 12.4%
- Median finish
- 4:09:35
- Finishers
- 14,215
Largest drop in pace between two mats.
Share of the field that ran the second half faster.
Fade, by finish time
Fade tracks ability, so a single field-wide median would compare you against people running a different race. Each band below is the median for runners who finished near your time.
| Band | Median fade |
|---|---|
| <3:00 | 3.7% |
| 3:00-3:30 | 4.5% |
| 3:30-4:00 | 4.5% |
| 4:00-4:30 | 7.4% |
| 4:30-5:00 | 12.9% |
| >5:00 | 18.0% |
Race conditions
- Temp.
- 15.0°C – 23.0°C
- Humidity at peak
- 65%
- Wind
- 3 km/h – 12 km/h
Temperature ran from 15.0°C to 23.0°C. At its hottest, the air was at 65% humidity.
Hour by hour
| Hour | Temp. | Humidity | Wind |
|---|---|---|---|
| 06:00 | 15.0°C | 96% | 9 km/h |
| 07:00 | 15.0°C | 96% | 9 km/h |
| 08:00 | 15.8°C | 94% | 8 km/h |
| 09:00 | 17.3°C | 87% | 7 km/h |
| 10:00 | 18.9°C | 78% | 9 km/h |
| 11:00 | 20.1°C | 72% | 11 km/h |
| 12:00 | 20.9°C | 70% | 12 km/h |
| 13:00 | 22.5°C | 64% | 3 km/h |
| 14:00 | 23.0°C | 65% | 8 km/h |
Hourly data from open-meteo. Peak wind 12 km/h. Times in the race's own zone.