While there are other challenging stairs around the greater LA area, these present their own unique challenge. Carved out of stone from the mountain and are not all the same level of step up.
The Park to Playa Trail is a 10.9 mile hike which begins in Culver City and heads down a bike path towards the Ballona Creek Wetlands located near Marina Del Rey.
The Runyon Canyon Park contains several hiking trails, including a paved fire road option. The trails can be reached after a short 1 mile walk from the Hollywood / Highland Metrorail Station.