The Road ahead and the road behind

The Road ever goes on an on,
right from the door it starts
and leads to other roads.
And I with weary feet,
tread upon these roads,
footprints that I follow,
footprints that I left behind.
Fellow travelers that I met,
One dearer than the next,
but must always part
when the road divides.
And wither then? I do not know.