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When is Boston Marathon 2026?
Monday, April 20, 2026
There are 18 days left until Boston Marathon 2026.
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18
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Boston Marathon
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Date details for Boston Marathon 2026
- Day of week: Monday
- Full date: Monday, April 20, 2026
- Days remaining: 18
- Weeks remaining: 2
Boston Marathon 2026 is on Monday, April 20, 2026. That’s 18 days or 2 weeks from today. Track it with a free countdown widget on your iPhone.
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About Boston Marathon
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