From Bulbapedia, the community-driven Pokémon encyclopedia.

This is the Bulbapedia walkthrough for Pokémon FireRed and LeafGreen.
These pages follow the remade Game Boy Advance iteration, not Pokémon Red and Blue. The guide for those games can be found here.

Route 3

Route 3 is a grassy road that leads east from Pewter City into the mountains around Route 4. Many Trainers can be found along the way as they raise their Pokémon for the upcoming cave.

Trainers
Trainer Pokémon Trainers with a Vs. Seeker by their names, when alerted for a rematch using the item, may use higher-level Pokémon.

Available Pokémon
Pokémon Games Location Levels Rate FR LG 6-8 35% FR LG 6-7 30% FR LG 6-7 14% FR LG 6-7 14% FR LG 3, 5, 7 10% FR LG 7 10% FR LG 6 1% FR LG 6 1% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

Items
Item Location Games Oran Berry Between the pair of ledges on the west side, near Youngster Calvin (hidden)  FR  LG

Route 4 (West)

The Magikarp Salesman

A Pokémon Center stands near the entrance to Mt. Moon. Inside, a shady man offers to sell you a Magikarp for $500. The fish is nearly useless until it evolves into the powerful Gyarados at level 20. With enough money to spare, you can end up with a strong Water-type Pokémon sooner than normal, but you can soon hook a Magikarp for free with the right fishing rod.

Available Pokémon
Pokémon Games Location Levels Rate Gift Pokémon FR LG Gift 5 Purchase for $500 A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

Mt. Moon

Mt. Moon, 1F Mt. Moon, B1F Mt. Moon, B2F

Mt. Moon is a mystical mountain that is known for its frequent meteor falls. The shards of stars that fall here are known as Moon Stones. There are many Trainers exploring the tunnels inside. Many cave-dwelling Pokémon, like Zubat and Paras, make their home here.

Trainers
1F Trainer Pokémon Lass Iris ナホ Naho Reward: $224 Lass Miriam ルリ Ruri Reward: $176 Hiker Marcos カツト Katsuto Reward: $360 Onix♂ Lv.10 No item Trainers with a Vs. Seeker by their names, when alerted for a rematch using the item, may use higher-level Pokémon. B2F Trainer Pokémon Trainers with a Vs. Seeker by their names, when alerted for a rematch using the item, may use higher-level Pokémon.

Available Pokémon

1F Pokémon Games Location Levels Rate FR LG 7-10 69% FR LG 7-9 25% FR LG 8 5% FR LG 8 1% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here. B1F Pokémon Games Location Levels Rate FR LG 5-10 100% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here. B2F Pokémon Games Location Levels Rate FR LG 8-11 49% FR LG 9-10 30% FR LG 10, 12 15% FR LG 10, 12 6% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

1F

Collect TM09 (Bullet Seed) and the Parlyz Heal to the west, then follow the tunnel eastward and climb down the first ladder.

B2F (South)

Battle the Team Rocket Grunt, then grab the Star Piece from the raised platform and take the ladder back to 1F.

1F

Go south to battle the next two Trainers. Be sure to collect the Potion, Rare Candy, and Escape Rope. Head north then west and climb down the second ladder.

B2F (Northeast)

Fight the second Team Rocket Grunt and pick up TM46 (Thief) from the platform. Inspect the large rock to find a hidden Ether before returning to 1F.

1F

Continue westward along the tunnel. Grab the Moon Stone in the northwest corner, then take the third ladder to the lower floor.

B2F (Outer Area)

Follow the winding tunnel in a clockwise direction to the northwest, where Super Nerd Miguel claims both the Dome Fossil and Helix Fossil lying here as his own. Defeat him, and he lets you choose one of them for yourself. The Dome Fossil was once a Kabuto, while the Helix Fossil was once an Omanyte. Continue on to reach an Antidote and climb the final ladder to reach the exit.

Route 4 (East)

Route 4 is a one-way road leading downhill from the mountains to Cerulean City.

Available Pokémon
Pokémon Games Location Levels Rate FR LG 8, 10, 12 35% FR LG 8, 10, 12 35% FR LG 6, 8, 10, 12 25% FR LG 6, 8, 10, 12 25% FR LG 10, 12 5% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

Move Tutors

Two Black Belts can be found training on the western hill. These men happen to be Move Tutors, people who are able to teach their respective move to a compatible Pokémon. The man on the left teaches Mega Punch, while the man on the right teaches Mega Kick. Like other Move Tutors, their service may only be used once.

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