Best EXP Spot to Level Up to 100 in Pokemon Fire Red & Leaf Green

This is my favorite and arguably the best spot in Pokemon Fire Red and Leaf Green to train your Pokemon to Level 100.

Note: This is for AFTER the Elite Four. You need to have access to Seven Island.

A video is linked below if you prefer to watch!

What you will need:

1. Vs. Seeker (can be found in the Vermillion City Pokemon Center, talk to lady next to the counter)
2. At least 1 strong and high level Pokemon. Preferably above level 70 with offensive moves.
3. (Optional): EXP share: Helps train lower level Pokemon
4. (Optional): Lucky Egg. I would start working to get this if you do not have already!
5. (Optional) Amulet Coin: Will double money earned

Why I like this place:

This place has 2 high level trainers with 5 Pokemon each. These Pokemon provide a lot of EXP when defeated. You can keep versing these trainers by continually using the Vs.Seeker. The house to the left is a healing center if you do a dance with the Chanseys. The Pokemon on this route and also quite high leveled so you can always battle those as well. 

I prefer this location compared to the Elite Four since due to the speed in which I can battle these trainers along with the EXP provided. I have not done a true comparison of the 2 methods for grinding EXP however I do not really think that is necessary. 

How to Get There:

Step 1: Hop on the Ferry and make your way to Seven Island. If you are on the main island in Kanto, the Ferry can be found in Vermillion City.

Step 2: Follow the path in the picture below or see the video. (Optional) Use a repel if you do not want to encounter wild Pokemon.

Step 3: At the location, continually battle the 2 trainers. The building to the right is essentially a Pokemon Center.