Fast travelling with Horse

[Katsu]

if i am on my Horse before fast travelling, what effect does it have?

[PlevisVesel]

None whatsoever. You'd think you'd go faster but you don't.
The only benefit I can see is that if you're stopped by enemies, you can just blow past them on your horse. Just be careful of archers.

[jswilliams]

I wonder if Horsemanship miles(?) are earned while fast travelling?

[PlevisVesel]

I don't think they are. But there's an easy way to find out.
Look at your XP for Horsemanship before and after fast traveling on horseback.
I can't do it anymore because I have Horsemanship maxed out

[jswilliams]

Oh right. I will do that and report back. On that note, what ups Vitality as far as travel. Just sprinting? I'll have a go at that too, but it might take a lot of dashes to see a nudge in my bar.

[Wenzilber]

I've found that sprinting or bunny hopping to your destination ranks up your vitality during travels.

Hunting appears to be the fastest way to rank up Vitality though. I suppose it's because the game doesn't differentiate whether you're in a battle against a bandit or a hare.

[PlevisVesel]

Training with Bernard raises vitality quite quickly

[Suzaku]

Apologies for the necro, but seeing as the question was never answered, I thought I might take the opportunity.

I tried fast traveling both while mounted and unmounted. Neither horsemanship nor vitality increased during travels.

[Alexoferith]

I concur with Suzaku. I didn't really bother with horsemanship during my first play through. In my 2nd play through, in hardcore mode, there is no fast travel and there is no compass. I travelled everywhere with my horse. My horsemanship got to level 20 I think just over half way through the main story. Hope this help.