If the mountain is being illuminated by the sun and you are being illuminated by the sun just orient yourself in a line that is parallel to the line from your camera to the Mountain and turn your back to the mountain and take a reading.
I will often have some idea of how I will be oriented to take a shot and just orient myself that way and then turn around and take an incident meter reading and then hike off to where I'm going to take the shot. If you are shooting in the middle of the day and the light isn't changing much because of moving clouds or the sun rising and setting you can take a reading and then hike for fifteen minutes and then take your shot. That solves the shadow/distant subject issue a lot of the time.
You have to understand what exactly it is you are metering. There is nothing magical about being close to the subject.