normally the fisrt kanto gym is pewter city but when you first get to kanto it is possible to go straight to the virmilion gym where you get off the ferry.
Pewter City
vermillion city
In the first city
His name is Brock and he is in Pewter City.
The last Kanto gym is in Varidian City.
It's in Fuchsia City of Kanto. :D
In celadon city ^Technically, that is true for the first generation of Gold, Crystal, and Silver. But in heart gold and soul silver, the fourth gym leader in Kanto is Misty (cascade badge) if she is not in her gym in Cerulean City, then you can find her up on Route 25. ~Kt
you have to go to Olivine city and get on the Fast-Ship Pier and you will end up at Vermilion city.
The final gym is the Viridian City Gym. Blue is the Gym leader.
you have to get all of the other gym badges in kanto and then go to Cinnabarr island and talk to blue. then go to viridian city and go in the Pokemon gym!
In the Kanto region, the sixth gym is in Saffron City. The gym leader is Sabrina.
beat all 7 gym leaders and go to viridayan city gym