How do you get to the fire gym on Pokemon Sapphire?

Here's how to get to the Fire Gym in Pokemon Sapphire:

1. Get the Mach Bike:

* After beating the third gym in Slateport City, you'll be given the Mach Bike by a man on the road to Route 119.

* Ride the Mach Bike to Route 119.

2. Go to Route 119:

* Route 119 is located to the north of Slateport City.

3. Navigate the Route:

* As you ride the Mach Bike on Route 119, you'll encounter obstacles like boulders that you can push with the Mach Bike.

* Follow the path, using the Mach Bike to push boulders out of the way, and eventually you'll reach the entrance to the Fire Gym.

Important Note: The Fire Gym Leader is Flannery. She specializes in Fire-type Pokemon, so it's a good idea to bring Water-type Pokemon or other Pokemon that are strong against Fire.