How Fast Is Molasses?

Molasses pours at roughly 3 mm per second at room temperature. In 1919 a storage tank in Boston burst, releasing a 35 km/h wave of syrup through the city's North End streets — far faster than people on foot could move.

The 1919 Boston Molasses Flood produced a 35 km/h wave of syrup that surged through the city streets.

• Same pace as an earthworm
• 50% faster than honey pours