Uni loves to run, however I do not. It depends on what personality your yorkie has. I've fostered many that couldn't be bothered to run, except maybe after a toy for a short distance. But Uni goes on 2 mile runs in a hilly park with bf, and after wards she's still ready to go. At top speed, or even a good trot, a yorkie will far outrun a human.
Long story short, foster Lily once got out and was running (fast trot pace) I could not catch up with her at all. A 6'+ tall kid saw me chasing her and he tried to help and was doing practically Olympic sprinting and still couldn't catch up with her! She wasn't even at top speed and this tall kid with a huge stride at top speed was too slow! (We ended up catching her once she got tired.)
However, how long can a yorkie go at that pace? You said you're running for an hour? that's many miles. If you can run for an hour, then def you are fast and have been running for a while. You will need a good workout for it to be worthwhile for you. I used to run, and I was slow. I did 3 miles in about 25 mins., I'm sure you are faster than that. So in an hour about 10+ miles? I think that's FAR too much for a yorkie.
If you want to bring him with you, perhaps buy a stroller. Might be more of a workout for you too.
