The dog looks a lot like my first dog, a half Collie, half German Shepherd that was given to my brother and me. He was incredibly intelligent and would do just about anything, herd cattle or hogs, tree squirrels, track people, kill venomous snakes, he was truly amazing.
Looks a lot like a Siberian mix, maybe Collie. Wouldn’t be surprised at German Shepherd but more spitz/husky traits, including they love to run and have the endurance.