What’s The Minimum Distance For A Flight To Be Deemed A Long-Haul Service?

What has been the longest flight you have traveled on? Was it an actual long-haul flight or not? What defines a long-haul flight? We often read about an airline launching a new long-haul flight or a short-haul service, and we understand, based on the provided information, how long those flights should last. But is there a consensus on what long-haul, short-haul, and even extra-long-haul and medium-haul flights are?