Milan San Remo is the longest one-day race on the UCI calendar. Because the stage is largely flat it is known as a sprinters classic, despite the fact that the parcours does have some climbs. In general the length of the stage and intermediate obstacles thin out the field considerably and the final sprint is frequently between a severely reduced ‘peloton’. In Figure 1 you can find an interactive plot with the Milan San Remo results since 2008.

In this post we are going to continue with the clustering problem that we started in February. The idea remains the same, we are going to try to automatically group riders, but we changed our approach considerably. In the first step we identify four rider clusters: time trialists, sprinters, GC guys/climbers and classics specialists. After that we zoom in on the sprint cluster and the clustering algorithm comes up with three distinct sprinter types.