Every year my SCCA region does a turkey ralley. This would be long the lines of the poker run of 04. Difference is you get somewhat vague directions for a ralley route, a time limit (usually 2 hours or so), and a sealed envelope with the entire route & final destination in it. It doesn't matter if you are the first or last to arrive to the final point. What does matter is how many miles did you drive. The one that comes the closest with out going over wins a prize. In this case it could be a FFC 06 ralley trophy and dinner or something?
example start at point A. Head West until you see the young house turn left at stop....... (The Young house would be a name on a mail box, you would then turn left at the next stop then look for the next clue)...... At the Y head toward green house with white roof make a Right at the brown fence........
You guys get the idea. We have a lot of fun every year with the ralley. Usual distance driven is between 30 - 50 miles. Best to keep track of distance between clues then ad you your total mileage.
Anyway just a thought.