if you're doing 100 miles, try and get the bike to feel comfortable to the point that you'll feel you can easily do infinite miles without discomfort, you should able to finish a ride without a lots of discomfort and wasted energy.
@edscoble started
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if you're doing 100 miles, try and get the bike to feel comfortable to the point that you'll feel you can easily do infinite miles without discomfort, you should able to finish a ride without a lots of discomfort and wasted energy.