How do I get more laps? I go on quick race and it'll only let me do two laps.
How can I make opponents harder? (yes, that's quite weirdly worded ) I don't have a challenge, they're all so easy to beat, or is it because I'm a Forza god?
Go onto career then pick your settings i.e braking line, abs, tcs, stm, opponent difficulty etc etc, hard with tcs and stm abs off isnt that challenging though in the right car you can still blow them away
Go into the main game, select go race, then multiplayer. Select new private game, and then you can set the game up with 7 computer players to be as long as you like.
Way posted is really only way to have mammoth races, there is plenty of endurance races though and some you can take fairly early in career, instead of picking out of the 3 championships given, go into event lister and race through there, go onto endurance and have some fun.