* Breed: Rough Collies and Smooth Collies have similar speeds.
* Individual: Some collies are naturally faster than others.
* Training: A well-trained collie can be faster than an untrained one.
* Motivation: A collie who is excited and motivated to run will be faster than a tired or uninterested one.
General estimates:
* Average running speed: 25-30 mph.
* Top speed: Up to 40 mph in short bursts.
It's important to note that these are just estimates. Individual collies can be faster or slower.
Factors that can influence a collie's speed:
* Body type: Collies with long legs and a lean build tend to be faster.
* Health: A healthy collie with no injuries will be able to run faster.
* Age: Younger collies tend to be faster than older collies.
* Terrain: Collies can run faster on flat terrain than on uneven or rough terrain.
Overall, collies are known for their speed and agility. They are capable of running at impressive speeds, especially when motivated.