Best way to round off the edges in a rectangle I'm trying to model an indoor football field which is like a hockey rink...

I've been able to add the bevel modifier; but, I've read where there is a better way to accomplish this.  Can someone walk me through the steps and help me apply 20 to 32 segments...

I've created the rectangle and placed it in edit mode; but, I'm getting confused as to how to add the bevel to the corners and then knock out the middle of the rectangle for the raised border walls..

Thanks
Trey
If i understood the question

Shift+A Add Plane

Go to edit mode and make the shape rectangular

Come out of the edit mode and Press Ctrl+A Apply rotation &amp; scale

Go to edit mode with the verts selected Press Ctrl+Shift+B Bevel it and scroll to add segments

With the rectangular rounded shape selected. Press I to offset the face

Now select the edge and extrude it and delete the top face. Select the bottom edge and Press F to fill the face