Originally Posted by
MoAlpha
You may well be right and I’m certainly not claiming that I’m fast or that this was any sort of great ride. The only reason I brought it up was that I didn’t really need to fuel much for it. If we re-run it at an FTP of 220 or 3.4 W/kg, which I’m pretty sure is an overestimate, based on my unimpressive history, the intensity is 82%. The truth may be somewhere in between.
Looking at the data the variability is quite high. An average Watts of 138 for your ride is more like 1600 Calories burned so I can believe one could do this ride without eating anything. The variability indicates lots of harder efforts so the energy used would be more carbohydrates than a straight 3 hours at 138 Watts.
I still think your FTP is too low and you're stronger than your FTP indicates.
I did a 3h15m ride (6:34 stoppage time so 3h22m total) in June that was 77% normalized and 73% average FTP and it drained me.