Over the past 10 years, Athens Marathon runners have faced temperatures ranging from 13\u00b0C (55\u00b0F) on cooler years to 22\u00b0C (71\u00b0F) in warmer editions. The median temperature of 18\u00b0C (64\u00b0F) puts this race in the neutral category for running conditions.
Wind speeds average 9 km/h during race hours, with peak gusts reaching 17 km/h in challenging years. Humidity sits around 72%, and there is a 40% chance of rain on race day.
These conditions translate to an estimated pace impact of +4.5% compared to ideal running conditions. For a 4-hour marathoner, that means roughly 11 minutes slower than a perfect-weather day.