My 2 cents is that basically you usually feel a lot faster than you are actually going, and your skis limit you as much as your legs or the steepness. I was a mediocre high school racer and still ski kind of like one. I go up on Mt Hood in the summer sometimes with all the racers, and sometimes if you get there on a weekday you can get a lot of room to yourself (which is mandatory for higher speeds imo). I just have kind of all around GS skis, but sometimes when there is room and the snow is right it's fun to open them up and make some fast turns. It's a pretty steep slope by resort standards, hate to think about straightlining it, but I'll make turns that feel like they are really "pulling g's" where my hands and hips are just inches from the snow or touching and my legs are pistoning like you see in the racers. It feels really incredible and fun if the snow is predictable, sometimes the turns are over 100 yards in length and maybe 70-80 yards in girth (if you tighten them up the transition from side to side is almost like flying). Anyway it feels really fast (it's not exactly Kitzbuhl), and I've logged in on my wristwatch GPS before. I'm not sure how accurate it is, but most of the time when I'm doing that type of skiing I'm in the 35-45 zone, and occasional get into the low 50s which I'm not sure if it that happens in the 2nd half of the turn as I start to kind of whip out of it, but I don't know. I would say that it feels very fast, very much at the edge of what my skis, legs, and eyes can handle, kind of like doing repeated leg presses. I'm not sure how it would feel with DH skis, but this is a very equipment oriented sport. Most skis like cars are not built for high speeds. Ski them in their intended speed zone and they feel great, but if you hit 100 in your prius it's probably going to feel pretty sketchy if it can even get up to that speed. If you're driving a Tesla you'll probably feel uncomfortable at speed before it does.