Originally Posted by DXchulo
The one good thing about the imperial stuff is that 100 miles is more manly than 100 km. The next time you're on mile 99 of a century and that last mile seems so important, think about what it would feel like if you were using the metric system. Would you really care about the difference between 159 and 161 km? Funny how those arbitrary units have such an influence, isn't it?
100, 150 and 200 are nice round numbers for km, too... on a mostly flat route 200km in a day isn't impossible for good riders. 100km makes a nice ride that doesn't occupy the ENTIRE day, you can finish and still have time to do some things in the afternoon/evening.