Which markings run the entire length of the runway?

Runway centerline markings are designed to run the entire length of the runway. These continuous lines help pilots maintain alignment during takeoff and landing, guiding the aircraft to the center of the runway for safe operation. The centerline markings are essential for ensuring that the aircraft remains properly oriented during critical phases of flight, particularly in low visibility conditions.

On the other hand, runway aiming point markings and threshold markings serve different purposes. Aiming point markings are typically found at a specific location along the runway and help pilots determine where to touch down. Threshold markings indicate the beginning of the usable runway for landing but do not extend the entire length. Runway hold markings are located at taxiway intersections but do not run the length of the runway; instead, they serve as a clear indicator for pilots to hold their position and ensure they yield to any active runway operations.