I've been to Bobcaygeon, Ontario many times, and here are some of the pictures. Bobcaygoen (pronounced Bob-cay-jon) is a great network of trails with some scenic rides and some quite challenging terrain.
Some pics by year:
2001: Green's Mountain Run.
Rathburn Trail Run....
2006: Pete, Henry, and I ended up in Bobcaygeon and tackled the Gooderham, Concession, and first half of the Rathburn trail.
2007:
Greens Mountain August Long Weekend Run. This trail seems to evolve on almost a daily basis. We had perfect weather for the day and the mechanical gremlins stayed at bay, so it turned out to be a great run.