I ran min across the roof, down the pillar, under the dash, and to the plug, on the passenger's side. The wire pushed easily into plastic mold and is hidden away.
There is someone on this forum that had a great write up how to route it, I used his instructions. Cannot find the thread right now.
I found the thread I used.
http://www.toyota-4runner.org/5th-gen-t4rs/185055-my-new-dashcam.html