Here are some pics of the hill I play on. Part of the Black Mt Ridge in San Diego. Topographs show that it's 1000ft above sea level and drops too 100-120ft at the bottom All in less then 3/4 mile (roughly 45* slope decent)
My house is on the street on the right side
Pic before dropping in
The single track continues on the back side and goes along the top of the ridge to the radio towers.
Pic of my 05' Trek Bruiser 1 with some upgrades