How Fast Is Curling Stone?

A curling stone glides down the ice at about 5 km/h — walking pace. Sweeping the ice ahead of the stone melts a thin film of water that controls its course, the only sport where you literally clean your way to victory.

In curling, sweeping melts a tiny film of water beneath the stone — the only way to steer it.

• Same as walking pace
• Sweeping melts a film of water beneath