I am using best bike split for the first time for a 210 mile gravel race. I have a few questions I was hoping the group might be able to answer. I think I am entering information incorrectly because I am getting a speed and time I think is unrealistic, or I have an incredible amount of inefficiencies in my drive train somewhere. My FTP is 275 and I am using a IF of .6. Aero helmet, gravel bike with gravel tires. I am pasting some screenshots below. Is my CdA way off? I find it hard to believe I will be rolling at over 17 mph at 152 watts. I am hoping some of you more savvy riders with more experience using Best Bike Split may be able to help. Or I could contact them directly but, what fun is that.