Call me stupid, but I can't find a race calendar (i.e. when, where, how many laps etc)...

Where is one?

Here. http://www.conceptracing.net/babyr/s2calander.html

Quote from Jakg :

Call me stupid, but I can't find a race calendar (i.e. when, where, how many laps etc)...

Where is one?

as you see if yuo go to season 2 on the website , you will find a new navi, where you can find the information about season 2