Does being mounted on a horse make fast traveling faster?

Is there any difference between:

1. Fast travel with no horse.

2. Fast travel with a horse you are not currently on.

3. Fast travel with a horse you are mounted on.

By difference, I mean in-game time that is consumed by the fast travel.

3

2 Answers

No, there is absolutely no difference, whether you're on foot, on a stolen horse, on a horse you own, or near a horse you own.

Tested by fast traveling between Riften stables and Markarth stables. the trip always took 26 hours and 5 minutes.

Yes, but only in one very specific instance: you're over-encumbered. Otherwise, all forms of fast travel occur at the same speed.

5