Over at BC the day takes on even more epic proportions, where all classes are cancelled as the race runs right past campus making it impossible for teachers and commuter students to get there. It's basically just a huge excuse to get wasted…really wasted…like blackout by 11:00 AM wasted. The stringent community and campus official restrictions on drinking are relaxed for the day and an anything goes mentality pervades. In short it’s a total shit show and every college student’s dream. 11:21 AM on Marathon Monday: the winner of the race crosses the finish line and everyone in Boston is already too drunk to notice
From the Urban dictionary
And because it will be a cold rainy Monday, a little warmth and sunshine