Move view to big coords

I can easily draw a box with coordinates betweeen 0 and 10. But I have some real UTM coordinates like (x,y,z) = (384020.86,6404157.57, 0) …
How do I place/move my view to see object created in the area around this point, like 50 x 50 km viewport. The unit is meter. Would it then be smart to have one opengl unit = 1 meter or …

Thanks Jakob

Easy, just create a scale such as 1 unit = 0.0x meters or whatever and scale down your vectors.

-vatoloco