Change URL of Node Title
Ok so since you already have a url field:


Set up a new rule where the event is Content is viewed of type YourContentType.
Add a Page redirect action.
For the destination use your field as a replacement pattern. So something like: node:field-url.


Just take note that you won't be able to view your content with this rule. But you can still access the edit page using the content management interface.



Just for your information, if you DO get access to the code:

You can use hook_node_view to create redirects. Since you already have the event URL in the node data you can use a drupal_goto.

Here's a snippet I found in a related question. I changed some things though.:

module_node_view($node, $view_mode, $langcode) {
  if ($view_mode == 'full' &amp;&amp; "Conditions") {
    // Change $node-&gt;url to what works.
    // Use the devel module and krumo() to check the contents of $node.
    drupal_goto($node-&gt;url);
  }
}


I've assumed you're using Drupal 7.