There are various trails that surrounds the park. Most go up a very rocky uphill climb that leads to other trails. However, there are other ways up. There are great singletrack to be found as you continue up. However, after awhile you can get lost in circling especially since not many people are on the trails at one time.
Downhills are nice after all that thigh burning climbs.
Blue Mountain probably rates 2 chilis if its compared to rides found in Bike mag. Therefore, it rates 3 chilis for a good East Coast ride and great trail system.