Navigating through the Kanto region in Pokémon: Let's Go, Pikachu! requires a clear understanding of the progression path for challenging gym leaders. Balancing your team's levels according to each leader's strongest Pokémon ensures smooth victories throughout your journey. Knowing the proper order and level expectations will help you build a well-rounded roster from the start.

The Early Challenges in Pewter City and Cerulean City

Your journey begins in Pewter City against Brock, who specializes in Rock-type Pokémon and uses aces around level 12. Preparing a Fighting or Grass-type move makes this first battle straightforward for new trainers. Heading east brings you to Cerulean City to face Misty, whose Water-type team reaches up to level 19.

Electric and Grass-type moves work best when taking on Misty's Starmie in the second gym arena. Catching wild Pokémon on adjacent routes helps keep your party adequately leveled for both encounters. Maintaining a level range of 12 to 20 across these two cities creates a strong foundation for future battles.

Mid-Game Battles in Vermilion, Celadon, and Fuchsia

Lt. Surge awaits in Vermilion City with Electric-type Pokémon around level 26, making Ground-type counters extremely useful. Next is Erika in Celadon City, who utilizes Grass-type Pokémon topping out at level 34. Fire, Flying, and Ice-type moves offer optimal performance against her defensive strategies.

Moving south toward Fuchsia City leads to Koga, the Poison-type leader whose team ranges up to level 44. Psychic and Ground-type attacks easily counter Koga's evasive tactics and toxic status conditions. Trainers should aim to keep their main lineup between level 25 and level 45 during this middle stage of exploration.

Late-Game Gyms in Saffron City and Cinnabar Island

Sabrina in Saffron City commands powerful Psychic-type Pokémon with levels peaking around 44 as well. Bug, Ghost, and Dark-type moves are vital for breaking through her high Special Attack capabilities. Afterward, traveling to Cinnabar Island prepares you for Blaine's Fire-type specialists reaching level 48.

Water and Rock-type Pokémon excel against Blaine's fiery offense in the seventh gym challenge. Ensuring your team reaches level 45 to 50 provides sufficient power to handle both of these specialized arenas. Proper type coverage remains essential for keeping battles short and effective.

The Final Badge in Viridian City and Indigo Plateau Readiness

The final gym in Viridian City features Giovanni, who utilizes Ground-type Pokémon with levels extending up to 50. Water, Grass, and Ice-type moves provide the highest damage output against his lineup. Earning the Earth Badge completes the eight-gym progression required to challenge the Elite Four.

Entering the Pokémon League at Indigo Plateau demands a team leveled between 50 and 55 for optimal performance. Continuous training through wild catches and trainer battles ensures your team remains fully prepared. Following this structured path sets up a successful campaign across the Kanto region.