How is Marathon Monday calculated?

This event is observed on the third Monday in April each year.

When is Marathon Monday 2026?

Name: Marathon Monday
Start: 2026-04-20
End: 2026-04-20
Location: United States

Monday, 20 April 2026

Marathon Monday is the nickname for the third Monday in April in Massachusetts, when the Boston Marathon takes place and coincides with the regional holiday Patriots’ Day.

Frequently asked questions

When is Marathon Monday 2026?: Marathon Monday 2026 is on Monday, 20 April 2026.
What day of the week is Marathon Monday 2026?: It falls on Monday.
How is Marathon Monday calculated?: This event is observed on the third Monday in April each year.