Is there a way on Google maps to draw a line so you know how long it is?

http://www.gmap-pedometer.com/

Hit start record and double click on the map to insert a point.

And I’m not sure why this is in meta.

I know you can do it on Google earth rather easily . . . .

I agree with @Kayak8, on gogle earth you can draw, edit and everything. Also, on google maps im pretty sure theres an “Edit” button in the corner of the map, that might help you.

If you go to Google Maps, you should see a Google Labs icon at the top (a green beaker). This may only be there if you are signed in with a Google account. One of the new lab features is the ‘Distance Measurement Tool’.

MissAnthrope has a good idea, but if you install Google Earth, you can not only easily measure straight lines (in all sorts of units, big and small), but also measure the length of a path. Great for runners and cyclists who don’t stick to a straight road (which could eventually happen to you!)