On each lap of Prospect Park (coming soon to Zwift too!!!) I do a sprint at the bottom of the hill to keep the momentum going. In 2024 I got up to 700 watts with a max HR of 165 on that segment but it was slightly higher going up the hill. I also do the sprints in Zwift but finding them in RWGPS would be too hard, and my goal is to be in the top 10. This year I haven't been able to get much above 600 on the same sprint in the park, every year it just gets harder but I'm glad to still be riding at 70.