Originally Posted by
FBinNY
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Also, try to ride as much of the time at or near your average speed. The wind resistance is proportional to the square of speed, so riding faster has a big penalty in energy needed. Someone who does half the trip at 10mph and the other half at 20mph, works much harder overall than someone doing the whole trip at 15mph...
He's also only averaging only 13.3 mph AND working harder. The trick to conserving energy for a given overall speed is realizing that it's the low speed sections that count. Top speed doesn't matter.