Depending on whether one is planning to climb on the upper section of the trail or the lower section, one could access accordingly.
Temple Parking - This is the quickest way to access the upper section of the trail. Fivetoten minutes of hike. Mostly bouldering here, and very few quality cracks explored at this time. From the temple parking, head north-west. As a popular trail, it is easy to locate both based on the wear and tear on the trail, and the garbage debris along the trail.
The lower section of the trail takes an additional five to ten minutes to reach, past the slabs.
Prayoga Parking - Use the Prayoga parking and hike through the fields and around the hillock. A bit longer hike (15-20 minutes) to the lower section of the trail, but preferable for some reasons. No up-hill driving and not having to negotiate the upper slab section when they are wet.