After defeating Team Galaxy at their headquarters in the city of Vilestone, they are headed to Mount Coronet to complete their plan. It's up to you to stop them and getting to them can be a bit tricky. In this guide, we will share with you the fastest way to reach the summit of Mount Coronet in Pokémon Brilliant Diamond and Brilliant Pearl.
The best way to reach the summit is to proceed to Route 208 or 207. Both will take you to the main cave that connects them. You will then need to make your way to the north part of the cave, at the entrance that connects Route 207 to Mount Coronet, and go up to the area where you can use Swim to reach the other side. Follow the path to where you can use Rock Climb on the wall and proceed through this path.
We advise you to continue in this way on Mt. Coronet until you reach a snowy part. Keep going to the right side, then up, and you will reach another area where you need to use Rock Climb. Use the skill only once, so proceed left, not through the cave to the right.
You want to go left, where all the tall grass is, and follow this path to the next cave entrance. Inside, you'll find a wall that you can use Rock Climb, and then you'll be on the correct path to Mount Coronet Summit.