I am using a CycleOps Hammer trainer. The gearing is the same that is on my bike at 11-27, though a cheaper (heavier) cassette. The weather is really nice today, so I plan on a real ride this afternoon, though it will be on my gravel bike which is heavier with lower gearing. I am going to pay attention to how I ride and see if I just don't push as hard when I am riding for real. I don't have a power meter, so I can't compare on that front.