Riding to Speed (at 40 kph)

I used to ride at l5 to 20 kph and that was it.  I joined a century ride to Subic and finished it in 6 hours and I must have done 25 kph.  However, as I joining a lot of group rides, I find myself lagging behind, and that the younger bikers just wait for us at the agreed pitstop.  Maybe, I am getting old.  But it is not so.  They are simply riding faster and stronger.

I  bought a book on how to ride faster.  And lo and behold, the last advice there was to ride with a group.  The group ride motivates you two ways:   the social pressure to do well, and to keep pace with the group. 

So solo riders, watch out, no improvement will be visible.

The im;portance of group rides