Partway up curvy Warren you’ll see the foot of the set-back green Oakhurst stairs to your left: 354 steps, first two pix.
Oakhurst ascends past Oak Park’s dead-end. Keep going to the top at Crestmont, a couple blocks’ worth of stairs: 3 thru 8.
At Crestmont, turn left and curve round to where the unmarked West Ridge Trail starts steeply up from the street. There are a couple of old wood steps at the foot. You can see this trailhead on Google Maps (Maps). The West Ridge continues to the Historic Trail where there’s a trailmarker: 9, 10, 11.
This time instead of meandering round on the Historic to the summit, continued my steepish up-scramble on the West Ridge above the Historic that leads directly to the summit. Pic 12.
Love where on the upper West Ridge you climb up alongside an old log and between rocks (13, 14). No one has messed with it and I’m truly grateful it hasn’t been “improved.” Continuing up: 15, 16, 17.
Summit-time: The benches, pic 18.
All the mountain’s trails and stairways are very well marked on Google Maps.
From the summit, down the North Ridge: 19 thru 24.
Medical Center Way winds around: 25.
Crossing the road, step over the guardrail where the marker says Fairy Gates Trail. The beautiful Fairy Gates continues to the east; this time descended to where the Edgewood begins.
Edgewood Trail out to Edgewood Avenue (26, 27) at the south end of the redbricked street, then north a few blocks to the top of the Farnsworth stairs (149 steps, last pic) that descend to Willard, just above Parnassus. There’s a #43 stop at Parnassus and Willard too.
… And also a stop at Parnassus and Stanyan if you don’t mind uphilling a few on Stanyan to the trailhead for the lower Historic, yet another delightful way into the forest.