hi im on the main boss race at the end, i'v done the two races with kenji and the other 2 and now i'm on the city race with darius but my mum wants to watch some gay antiques program, so if i finish the race with darius in the city and then go to the safe house, will i have to do it all again or can i just save it?

You have to beat all three races, at the same time. You can't beat one race, save, beat another, than save and so on.

but when you beat the first three races you can save it and turn off ur ps2?

If I remember correctly there only is three races.

i thought it woz 2 races against the old bosses then a city race with darius and then canyon against darius

Oh, no I'm mistaken, I think it's one circuit with all the old bosses, than a Canyon race with the old bosses, than it's vs Darius, either way I know you have to do all three races at once.