Garmin 205W & 260W destination city

I am quite sure I am not the only one who has asked this, and I am sure
it has been covered here SOMETIME in the past, but I have been unable to
figure out an answer to this somewhat simple request. I would like to
be able to simply program either of the above mentioned Garmins [205W &
260W] to go to a selected city. For example, I am in the San Francisco
Bay area, and let's say that I wanted to go to Las Vegas, which is
common to this area. I know how to get there, obviously, but I would
like to be able to program the Garmins to get me there, so I will be
able to see the features such as how long it will take, etc. Simply
put, how does one set the garmin for a destination city ONLY, without
having to put in an address? Thanks!

that could be tricky -
but took a look on my 255... (260 is in the other car)
as it may not direct you the way you are used to going,
or even to the area you want to visit.
Most maps, etc - use the "post office" as the center of town,
or the epicenter for the street numbering.

and the destination is downtown, right near City Hall.

Confirm it also works with the 205W - and although I have CNEU loaded,
it tells me your Las Vegas is 8607km away (although there is one in
Madrid province which is nearer!)