making a trail one way is not always the answer either. At a small park like Illinewek, riding the trail both ways basically give you more trail. There are two long mostly downhill runs in the park. If there are other people in the park you may want to avoid going up these runs. Where are they? on the North loop, it's the last part of the loop going counter clockwise. Right under the lookout. On the South loop it's the first 3/4 of a mile or so if you run counter clockwise. Always give a "WHOO!" when going around a blind corner.