today i joined my first group ride. I joined group D which seemed a nice an easy ride. But when it was flat or downhill I wasn’t able to stay with the group – not even close. E.G. I was doing 3,5-4 W/kg (250-300 W) at 100rpm and fell behind. All the other riders where doing approx. 2,3 W/kg.
As soon as it was going uphill I closed the gap in no time and had to ride at 1,7 W/kg or less to stay with the group and not ride away on the front.
I am riding with a calibrated Tacx Flux. What is wrong here?