Originally Posted by
Rides4Beer
I've often heard people say that it's the engine, not the bike. Last night was a good example.
I took my gravel bike to the A group ride, because my aero bike is setup for a TT on Thursday and I didn't want to mess with it. So I put on my road wheelset with 28mm GP5Ks (measure at 30mm) and ended up setting nine segment PRs, riding my non-aero, 4lbs heavier, endurance geometry gravel bike.
So you are faster with the A group, than you are on a solo ride.
It's not surprising at all.