Yes, on top and bottom of the bar on the right you have dates. Those dates are the dates of the first and last post, if you click on it you'll jump right to it.
Like I said above, getting to the end is pretty easy. Also, when you have unread posts in a topic and you enter it you should be redirected to the new posts.
Another method to navigate is to grab the bar on the right, you don't need to click on it. You can grab, select the exact post/date you want to go to and it only jumps to the right post when you let go.