Dream Theater - "Endless Sacrifice"
"I'm so far away
And so alone
I need to see your face
To keep me sane
To make we whole"
Opeth - "In Mist She Was Standing"
"Passing the lake I know so well,
I am near yet so far away."
Opeth - "Benighted"
"Come into this night
Here we'll be gone
So far away
From our weak and crumbling lives"
Testament - "Sewn Eyes Shut"
"Is there no shame
Is life so bad without you?
So far away
and I still can't fight you"
Evanescence - "Before the Dawn"
"And maybe tonight,
We'll fly so far away
We'll be lost before the dawn"
There's another one I can think of off the top of my head, but it's so obvious, so I'll let someone else tackle that one. ;)