Never miss an important date
How Many Days Until Boston Marathon 2027?
398 days left.
Boston Marathon is on Monday, April 19, 2027.
Get the free iPhone app with countdown widgets, reminder alerts, and easy sharing so you can plan ahead for any event.
398
days
Boston Marathon
Outside
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Frequently Asked Questions
How many days until Boston Marathon?
There are 398 days until Boston Marathon 2027 on Monday, April 19, 2027. That's 56 weeks or roughly 14 months from today.
When is Boston Marathon 2027?
Boston Marathon 2027 falls on Monday, April 19, 2027. You can add it to your calendar or set up a free countdown widget on your iPhone home screen with the Outside app.
How long until Boston Marathon?
Boston Marathon 2027 is 56 weeks and 6 days away — roughly 14 months from now. Set a reminder so you don't forget.
Is there a free Boston Marathon countdown app?
Yes! Outside is a free iPhone app with a Boston Marathon countdown widget for your home screen. It includes reminders, calendar sync, and sharing with friends. Used by 300k+ people.
