While Best Bike Split does rely on power to give an accurate model and pacing plan, it is possible to use estimated speed in lieu of power for race day execution via our Speed Based Course Cheat Sheet provided that you have done the following.
- Have a good understanding of what your accurate FTP (Functional Threshold Power) is based on an indoor smart trainer or from using a power meter in training (Powertap wheel).
- Rerun the model with the most up-to-date weather forecast update.
- Be flexible to know when a certain speed may be pushing your HR or level of effort too high. In these cases you can shift your target speeds down a bit and keep the same speed deltas between conditions.