They may be extremely fast in the mountain stages due to very high power - to - weight ratios , but they lose significant time in the flat time trials , which require very high absolute - power outputs .
This is most obvious when watching lighter road cyclists .
road cyclists may be extremely fast in the mountain stages due to very high power - to - weight ratios , but road cyclists lose significant time in the flat time trials , which require very high absolute - power outputs .
This is most obvious when watching lighter road cyclists .