Here in the US, your road racing age is your age on Dec 31 of the racing year (for me this year, that is 39). HOWEVER, since the official cyclocross season runs through January, your racing age for cyclocross is your age on Dec 31 of NEXT year...

Sucks to hit a big milestone so early, but it's good prep time . And the good news is that I am actually looking FORWARD to 40...

SheFly