Near Sydney and Katoomba in the Blue Mountains National Park, the name of the Narrow Neck Trail (26 km) refers to a narrow strip of ridge in Katoomba. Narrow Neck divides Jamison and Megalong valleys and provides a bountiful supply of the spectacular views that make the Blue Mountains world renowned. The trail route is about 5 kms from Katoomba Station to the Glen Raphael turnoff, another 3 kms to the gate and then around 10 kms to the end - 26 kms of dirt all up.
To reach the trailhead, catch the train to Katoomba station and head west - either side of the railway line will do. Either way, youll end up on the Great Western Highway before the turn off. Turn left off the highway at Shell Corner - a sharp right hand bend with concrete barriers down the middle. This road is mostly called Cliff Drive - mostly, because at one stage it becomes Narrow Neck Road, and then turns back into Cliff Drive. Although there is a dirt turn off signposted Narrow Neck Road, it isn t the road to Narrow Neck. Keep going till you see Narrow Neck Lookout. Stop for a look, and you can see the start of your mountain bike ride. Turn right into Glen Raphael Road, and you are on the Narrow Neck fire trail.
Glen Raphael Road plunges down towards the valley in twists and turns, but be careful, as this bits two way and used by all sorts of vehicles. Soon the downhill stops, and you are faced with an enormous climb to the gate. Eventually you reach the Narrow Neck that gives the trail its name - at this point, if you slip off one side of the road youll stop in Jamison Valley, and if you slip off the other side youll finish up in Megalong Valley. Truly spectacular.
Reprinted with permission from http://www.hawkesbury.uws.edu.au/~fathersa/narrneck.htm