At Ultimate Howrse, secret pages are one of the most requested things we're asked for. Objective 100 is to find secret page number 3.
Now as with all secret pages you MUST be able to see the objective in your list of next objectives AND be logged in to Howrse. Otherwise it will not work.
So, how to find it - as previously, you need to open a new tab on your browser and paste in:
Now THE ID is where you add the ID number of the player who is at the top of the rankings on the day for competition wins. You can find this player under the Ranking tab and then Breeders. In the bottom half of this page you'll see a ranking for the 'number of competitions won yesterday'. Click on the name of the player at the top of this ranking. Once on their profile page, if you look in the URL bar at the top of your screen you'll see the web page address. This includes the player's ID.
So, for example on my profile page this is what you will see:
That last number is my ID. And that is what you need for the secret page number 3.
So for example, today's URL that you would paste into your URL bar is:
Obviously this may change each day - so be sure to check.