Originally Posted by Sy Reene

I'm not claiming the latter, just that aside from racing or following specific training regimens.. iow, just grabbing a bike and going out on a course, dragging the heavier bike thru that course is likely more effort. Take your example of that solo ride you chose to do.. comfort aside, if instead you had grabbed your lighter bike, and (if you're familiar with Strava?), would you expect to have seen a lower, same, or higher resulting "Relative Effort" score versus having chosen your heavier bike?