Depends on your theme. I have the same problem and use the Custom Community theme.
I fixed the list and grid views by adding <?php get_sidebar();?>
right before the get_footer in both gridview.php and list.php.
Then you want to edit the events.css to get the sidebar to fit (it will be somewhere under the page to the left in my theme)
Cannot figure out how to get this done with the single view so far..