Schedule for tomorrow: 400km

Yes, tomorrow I am going to beat my personal old  record of the longest distance cycled within 24 hours. The still current record was done in summer  1993, when I did a day distance of about 330km.
But tommorow I'll try to do the 400km. Weather will be fine, bike seems to be in good condition (I have slight doubts about the rims, they seem to have reached the end of their life span), knees do not hurt. Best conditions to do the ride.
Now I only hope that the tour will not be too hilly and that I will have the condition.
On sunday morning I'll know...