The first mile of this trail is the hardest. There are steep, pea-gravel switchbacks that will probably force all but the best riders off their rigs. This is mostly over when you cross the road the first time. The trail then becomes a relatively nice climb up the canyon (similar in feel to Apex Park next door). After another mile and a half, you will cross the road again, but just continue across and keep heading uphill. This next section is very pleasant and is under the cover of trees for those hot days. It is all fairly steep though, so dig deep to push on to the summit which is about a mile past the road. When you hit the picnic table you can look around and take some pictures as you will have a great view all around you. However, before you go back down...ride uphill onto the pavement and look for a small trail that is on the other side of the road and heads off between the road and a large fence. I recommend jumping on that singletrack and following it for a mile or so as it is fast, fairly level, and great fun. When you reach the end you will be at an intersection with Lookout Mtn Rd again, and this is where you can catch the descent into Apex park and loop at the bottom back to the Chimney Gulch parking lot. However, for this description, we turned around here and did our trail in reverse, making for a long, fast descent back to the car.
If you are feeling a bit lazy, you can catch Lookout Mtn Rd and blaze down the pavement to save time!