I posted a few months ago about my frustration with not being faster on my road bike. I have a brand new Tarmac with a left sided stages crank PM. My ftp is 275, I am 173 lbs, so about 3.5 w/kg. I can hold 300 watts for 20 minutes outside, and probably higher than that now. But when I ride, my average speed for zone 2 riding is only 17-18 mph. Last weekend I rode for two hours, zone two, and averaged 15 mph with 2000 feet of climbing.
I keep reading about others on this forum who regularly average well over 20 mph on their road bikes. What am I doing wrong lol? I wear regular cycling clothing, nothing too baggy, but this time of year with the cold weather I wear a jacket or a loose fitting heavy shirt over a few layers. But even in the Summer I was not that fast.
That seems about right.
The people doing over 20mph on their road bikes are either riding above zone 2, riding in a group, are on flat ground, or are stretching the truth.