Scenes from the 2017 Boston Marathon

The 121st running of the Boston Marathon was another incredible Patriots Day in Massachusetts. It was a warm race for the runners, with temperatures in the high 70s and strong sun in the morning. Viewing the race from mile 24, so many good-willed fans cheered along the runners down the final stretch of the course towards Boston. Katherine Switzer made her return to the race 50 years after she was the first woman to run the Marathon in 1967. She wore her original bib number 261. In all, Marathon Monday brought out the best in people to make for an amazing day.

Edna Kipligat, #1 women's division.

Edna Kipligat, #1 women's division.

Rose Chelimo, #2 women's division.

Rose Chelimo, #2 women's division.

Jordan Hasay, #3 women's division.

Jordan Hasay, #3 women's division.

Geoffrey Kirui, #1 men's division.

Geoffrey Kirui, #1 men's division.

Galen Rupp, #2 men's division.

Galen Rupp, #2 men's division.

Meb Keflezighi, #13 men's division and winner of the 2014 Boston Marathon.

Meb Keflezighi, #13 men's division and winner of the 2014 Boston Marathon.

Kathrine Switzer, the first woman to ever run the Boston Marathon 50 years ago, with her original bib number 261.

Kathrine Switzer, the first woman to ever run the Boston Marathon 50 years ago, with her original bib number 261.

Fans cheered from early morning all through the afternoon.

Fans cheered from early morning all through the afternoon.

By mid-day at mile 24, it was sunny and in the 70s, making it a tough last few miles.

By mid-day at mile 24, it was sunny and in the 70s, making it a tough last few miles.

Some runners got a boost of energy from the crowds.

Some runners got a boost of energy from the crowds.

Cruising downhill.

Cruising downhill.

Anxiously awaiting the first wave of runners to arrive in Brookline.

Anxiously awaiting the first wave of runners to arrive in Brookline.

A runner from Alaska taking high-fives from the crowd.

A runner from Alaska taking high-fives from the crowd.

Personalized cowbells bring fun and energy along the route. 

Personalized cowbells bring fun and energy along the route.