Run. Because it's all you can do.
To escape.
Run, and listen to your heart palpitate.
Your own pathetic heaving reduced to multiple sobbings as air is sucked relentlessly out of your own lungs.

Run, as your knees start to knock and become week, your feet registering a rhythm of its own and a pace totally unknown.
Run, as reality rushes by, the wind pitting itself against you, resisting, holding back.
Run,
Because there's nothing else you could do anyway.