I've seen plenty of Uma Musume models. I've downloaded plenty of horse girl models myself. It's one of my favorite series ever. I'm adding these sentences just to get extra search keywords in there to somehow say "horse girls from Uma Musume: Pretty Derby go fast" so this model shows up in search results a bit better.
But I haven't yet seen a model that captures the excitement of uma musume races.
This model is trained using 53 pictures of uma musume fanart involving the really hype close ups of running during important races, or nearing the end of the race. When the camera zooms in, time slows down, magical effects of sheer determination start flying: that's all what I wanted to try and capture.
This model is NOT trained on any specific horses, though I'm sure you can use specific keywords to coax them out. But I was not trying to get pictures of "Taiki Shuttle running" or anything of the sort.
Usage
Throw dsumarun, running will activate the Lora. From there, your mind's the limit. I've had some images that are about the same as without the Lora, and some that are so vastly different they're not even recognizable.
And I think that's beautiful.
I honestly couldn't even tell you how to use this model. But I've found it very fun for making action scenes.