The finish line in Paris is impossible
to get to unless you have some sort of VIP pass. There are actual
seats, but you can't use them. You can get close though, if you are
willing to hang out all day and stare at the dirt. In actuality, it's
not that bad as there are plenty of things going on to keep you occupied.
Guard that piece of fence with your life, the masses will arrive and
try to crowd you out. Try to situate yourself in view of one of the
many giant video screens so you can see the finish as well as the
live action when it passes you.