The riding area of Umyeonsan is the southwest quarter. The entire north side has been stepercised and is a waste of time for riders, unless you just like carrying your bike up and down stairs.

The south west quarter of the mountain is pretty good riding. The uppermost trails have been stepercised, but were really too steep to ride safely anyway. The lower two thirds of the southwest quarter contain numerous trails that can generally be ridden up (unless you are totally unfit and lazy) or down, allowing some nice circuits to be ridden.

I'll get around to plotting a few of the major trails on this map one of these days.