While I've spent a little time on the track (Schwantz School at Road Atlanta, California Superbike at Laguna, Assen on a rented Honda 929), it's all road these days. I'm lucky to be living within a few minutes of some great motorcycle roads in the North Georgia mountains, and while I'm a lot slower on them than the fast guys (but faster than the slow guys), they provide all the riding challenge that I need.
Remember: you test your skill on the track, but you test your luck on the road.
2004 RC51. 2004 ZX10R, 2003 ZRX1200R (big, comfy couch)