Patriots’ Day history runs through Waltham streets 

At the corner of Main and South streets, there’s a modest marker that points to a moment when the city stood along a path that helped shape the nation. 

It commemorates the Henry Knox Cannon Trail, a historic route that carried artillery and troops during the American Revolutionary War.

Knox was a young bookseller-turned-soldier with a pretty tough assignment. In the winter of 1775-76, he led an ambitious effort to transport 59 cannons from Fort Ticonderoga and Crown Point in New York to George Washington in Boston. The guns were desperately needed to break the British hold on the city. 

The journey stretched nearly 300 miles and required hauling the heavy guns over frozen rivers and rough terrain using sleds and oxen. It took 56 days, and it’s considered one of the most remarkable logistical achievements of the American Revolutionary War. 

Waltham was right in the middle of it. Main Street served as a key corridor into Boston, placing the city directly along the path Knox and his team likely followed as they approached their final destination. Waltham wasn’t just a bystander to history – it was part of the landscape. 

Historians can’t confirm the exact footprint of the trail at every point, but the route through Waltham shows the critical role local roads played in moving troops and supplies during the war.

The cannons ultimately helped force British troops to evacuate Boston in 1776, marking a turning point in the war. Today, the marker at Main and South is a reminder of Waltham’s role in the fight for independence.