Hello!
I'm trying to level up my Training mastery by riding a horse AFK, and more often than not I find myself knocked off by other players, disrupting leveling process?

If there a way to make them not be able to attack me and my horse?

It looks like this game is full of griefers and jerks.

afk in safezone or afk on a level 49 or lower

Bait thread, OP decent lifeskiller ( for 2 year account) and still in 2 years he didn't learn basics of  BDO- if you don't want human interaction dont do you things in popular location. 99% OP is AFK riding in Media/Serendia main road.

No, its not any bait thread.

Yes, I'm kinda old player and yes, I'm sort of decent in SOME life skills, but not Traning.

I've learned to avoid players most of the time during my activities, but sometimes its hard or impossible.

Safe zones I tested are too short and narrow to turn and have bush, fence, wagon, log, any other junk my horse constantly gettting stuck in, in additions of so many bored players who didnt find any other way to entertain themselves other than screw others'.

Why this game allows such behaviour, its not like I'm stealing someone's bread.

train on elvia realm.
Pretty much guarantee that there are places on elvia server that will never ever see another player character in a million years.

You took the words right out of my mouth. The best thing to do though like someone mentioned above if you will be AFK training just make a level 49 since this is the safest and surest way not to have the  horse trainer sociopath KD you off your horse for laughs and giggles.

You train in Heidel and you complain???

If you train near Heidel, especially the road between Heidel and Calpheon, and a bit into Mediah, that has a high chance of getting disturbed.

I found that riding between Olvia and Epheria was a pretty good loop. It's long and doesn't have many sharp turns.

You can probably ride anywhere you like in Elvia in Balenos and there are paths in Mediah that are also quiet.  Try different servers as well.  Some are a lot better than others to avoid this.