Found this old thing. If i were to bet which mod could do this idea the justice it deserves, it's this one.

https://mods.factorio.com/mod/tony_hacks_pro_rails

Grinding on train tracks? Yeah sounds safe enough 😅

idk about train tracks since they're already used to transport players, it sort of doesn't make sense to make train tracks have an alternate function that is also just transporting players. But in my most recent play though I was building another set of defense walls around my first set and I found myself thinking how cool it would be if I could somehow use the old walls to transport myself around, maybe like a skateboard grind rail?

Sweet! Walls sound good, I was just thinking rails since you're already somewhat familiar with them, plus the idea of Skitching on a train wagon going over jumps sounded fun (also sparks) but yea, walls sound good! (plus i imagine there's alot less animations) Would walls from mods have trouble using it though?

I haven't really thought about it in detail, it's just an idea at the moment

Probably best to go with the walls. Found a better version of the personal train mod here https://mods.factorio.com/mod/railway-motor-car