Fitted road bike? I do it regularly on a 3x7 hardtail MTB loaded down with pannier bags and a frame bag. That’s not downhill, that’s on a flat. I am just an ordinary bike commuter too, not an athlete and I have a low end steel Trek meant for single track MTB riding. It weighs at least 30 lbs with all my stuff on it.
I think you are overestimating how hard it is to go fast with little to no training and the right gear, even someone who doesn’t ride regularly could probably hit 20 on a flat if they tried. Downhill you can hit 35mph+ even if you aren’t in shape and barely know how to ride.
Fitted road bike? I do it regularly on a 3x7 hardtail MTB loaded down with pannier bags and a frame bag. That’s not downhill, that’s on a flat. I am just an ordinary bike commuter too, not an athlete and I have a low end steel Trek meant for single track MTB riding. It weighs at least 30 lbs with all my stuff on it.
I think you are overestimating how hard it is to go fast with little to no training and the right gear, even someone who doesn’t ride regularly could probably hit 20 on a flat if they tried. Downhill you can hit 35mph+ even if you aren’t in shape and barely know how to ride.