Thanks for the reply! Okay, so I’m on the right track with the big ring. At least I’m doing one thing right. And you are correct, these are usually with a rolling start with the speed generally around 27-30mph for a mile or less. I just don’t have enough in the tank at the end. Honestly, some of my better efforts are part of a longer, even harder ride, rather than focusing on just the sprint early in a ride.