DNF: meaning and usage for runners
DNF means Did Not Finish, a race result used when a runner starts but does not complete the official course.
Example
Example: A runner who starts a trail race but stops at a medical tent after 28K receives a DNF instead of a finish time.
Why it matters
DNF gives a clear race result when finishing would be unsafe or impossible. It also separates a started race from a no-show or timing error.
How runners use it
If injury, illness, heat, or safety makes finishing risky, check in at an aid station or with medical staff so the race knows you are off course.
Related terms
Related resources
FAQ
What does DNF mean for runners?
DNF means Did Not Finish, a race result used when a runner starts but does not complete the official course.
Should beginner runners know DNF?
Yes. DNF appears in training logs, race instructions, and runner conversations, so knowing the basic meaning helps you act on the information.