Originally Posted by ratebeer
During club rides I usually have to apply my brakes almost continuously on descents to avoid riding over the riders in front of me. If I find a free spot, I often coast past pedaling riders going 5 to 10 mph slower. Improved aerodynamics = free speed, (as long as you don't have to apply your brakes.

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On a descent if your catching them from a distance OK

, weight also helps. But if your within a few feet that's the effect of drafting.
The most aerodynamic position might not be the fastest, if you can't properly put the power down or uncomfortable. Best thing to do in a short time is intervals.