[hlnx1]

On flat roads, air resistance is the biggest force a cyclist has to overcome, and the rider’s body creates most of it. That makes position a powerful lever, even for amateurs.

• At typical speeds above roughly 30 km/h on the flat, aerodynamic drag makes up the large majority of total resistance
• Lowering the torso and narrowing the arms often saves more than expensive equipment changes
• An aggressive position is only useful if you can hold it and still produce power; comfort and sustainability matter
• On steep climbs, speeds are lower and weight matters more than aerodynamics

Related: time trial aerodynamics and power.

Have you changed your position for aerodynamics, and could you hold it?

[hlnx1]

A cheap test: on a calm day, ride the same flat out-and-back route at the same power in two positions, for example hoods versus drops or a narrower aero bar setup. Repeat a few times. Consistent speed differences at equal power give you a rough idea of the gain.

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