2025 World Athletics Championships – Men's marathon
| Men's marathon at the 2025 World Championships | ||||||||||
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| Venue | National Stadium | |||||||||
| Dates | 15 September | |||||||||
| Competitors | 90 from 47 nations | |||||||||
| Winning time | 2:09:48 | |||||||||
| Medalists | ||||||||||
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The men's marathon at the 2025 World Athletics Championships was held at the National Stadium in Tokyo on 15 September 2025. This edition had the smallest margin of victory in World Championships marathon history, at only 0.03 seconds.