heyas; actually, the horizion is usually only 3 miles away. thing is, you can see stuff beyond the horizon. (i know i can see a city that is 30 miles away, 'on' the horizon.) why you would want to measure palm trees distances to the horizon, i can't imagine... ;) i just zoom out until i can see the horizon (in the top view). sometimes i put stuff out there. otherwise i usually create false perspective distances. you don't really need to make everything real-life perfect. ;)