After performing analysis on an entire race course you may want to isolate certain sections or segments of a course to model individually. To do this go to the specific course page used for your model, download the GPX file, then upload that file (using the course upload button) and crop the course to the desired section. You can then duplicate your model changing out the original course for the new course section. For higher fidelity you will want to turn on the Rolling Start option in your advanced settings.
This is useful for analyzing sections of a race where you may want to test certain tactics or for training for specific sections of a course using one of our downloadable files.