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From: Free Thinking Doggie
There is a reason. Above about 20 Km/hr, about 60 % or more of your energy is used up just getting through the air. So the smoother your surface, the less air resistance. Saving watts is everything. Same with the bikes, bike are now very aerodynamic compared with just a few years back. No external cables, aero seat post, aero frame, aero wheel rims... Edited on 04/07/2026 at 16:51:06.

Current Thread	Author	Time
Some Tour stages may be run at night due to extreme temperatures ...[more]	Hamsterwheel	09:43:21
>> Will be even more boring watching people riding bikes in the dark	Occhio Pazzo 🇬🇧	12:45:29
>> Can’t see those tight arses in Lycra they seem to love.	Denc 🗡	13:17:24
>> There is a reason....[more]	Free Thinking Doggie	16:47:01
>> 25km / hour is sufficiently fast these days. Faster downhill but no effort ... [more]	JonH🍕	17:32:33
>> Don't mind the girl ones so much, but the blokes should cover up	Occhio Pazzo 🇬🇧	15:40:49
>> Tis you mentions then every time 🚲 discussed.	Hamsterwheel	14:01:28
>> Klaus Bin in those tight lycra shorts, riding no handed! No need for that....[more]	LP12	14:38:59
>> I can watch quite a few stages live…....[more]	Hamsterwheel	11:41:14

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