210 Freeway (East of Pasadena).
Exit Santa Anita Avenue and go North (toward the mountains).
Go to the end of the road and park in one of the parking lots at Chantry Flat.
The Pack Station is just above the last parking lot.
If you park along the road, be sure your car is completely behind the line or you will be ticketed or towed.
Parking is free, but a Forest Service Adventure Pass is required.
Forest Service Adventure Passes are sold at the Pack Station.