In Forza Motorsport 3 for the XBox 360, the only place where I can see a "Splitscreen" option is in the single race mode.

Can I start an offline, splitscreen co-op career mode?

2 Answers

No, you can't. There is no co-op mode in Forza 3.

1

The Splitscreen title is just a game for local multiplayer (2 controllers), not for co-op or online.