What is the length of runway centerline markings in feet?

• A. 120 feet
• B. 100 feet
• C. 150 feet
• D. 180 feet

Answer: (A)

Runway centerline markings are a dashed white line that runs the length of the runway to help you stay aligned with the center as you roll, approach, or depart. The line is made up of fixed-length dashes spaced along the runway, and that dash length is standardized for visibility and consistency. In this context, each dash of the centerline is 120 feet long, which provides a clear, persistent visual cue from a distance and under varying lighting conditions. Because the marking is designed to be uniformly spaced across the runway, 120 feet is the accepted length you’d use to identify the dash size among common options. The centerline itself extends the entire length of the usable runway, and the dash pattern is a predictable guide rather than a one-time measurement, which is why the 120-foot value is the correct reference for the dash length.