What is the width of the runway for a javelin throw?

Explanation: In track and field athletics, the javelin throw event requires competitors to accelerate along a designated approach runway before launching the javelin. According to World Athletics (formerly IAAF) official regulations, the runway must maintain a specific uniform width.

### Important Facts:

• Runway Width: Exactly 4 meters wide.
  


• Runway Length: The runway must be at least 30 meters long, and where conditions permit, at least 36.5 meters.
  


• Foul Line: A curved arc line at the end of the runway marks the limit; stepping over it invalidates the throw.