In the Korean MMORPG Black Desert , the latest patch introduced horse racing.
One thing that makes Black Desert special from a Western perspective, is the handling of your own mount. It is not meant to simply appear out of nowhere, do its job, and then be stowed away like in Western MMORPGs; instead, it is intended to become an important part of life as a trader, warrior, or traveler in Black Desert.
In a trailer from the closed beta, mounted combat was showcased:
The individual mounts have different stats, levels, can be improved, cared for, and deployed, and they can be specialized for specific purposes: either as pack animals, as riding mounts, or as warhorses (or war elephants). You can even breed them.
With the latest patch, a feature came into play allowing players to participate in horse races against other players. These are cross-country races as seen in this fan video.