You don't. You have to go down to Vermillion City first. From there you take Diglett's Cave to just outside Pewter.
Go to Route 6 and north into Saffron City. You can't go to Cerulean or Pewter, the paths are blocked. But go north out of Saffron, and you reach Cerulean. You can use the walkthrough at psypokes.com.
Battle the Eight Gym leaders. It is just like Johto.
Gym 2 is Cerulean City, and the Gym Leader is Misty ("The Waterflowers of Cerulean City" is the Pokemon episode with Misty and her three sisters). To get to Cerulean City, you need to go through Mount Moon.
From the first gym to last it goes: Pewter City, Cerulean City, Vermilion City, Celadon City, Fuchsia City, Saffron City, Cinnibar Island, Viridian City.
Go past mt moon go east and you will be in cerulean city.
You can fly there or go west.
You have to wake up Snorlax using the poke flute music on your radio and enter diglett's cave.
By going from Pewter City to Cerulean City, you just hop off the ledge. From Cerulean City to Pewter City, you can't. You have to go around and into Diglett's Cave.
Go to the cave between Cerulean City and Pewter City.
mt. moon is between pewter city and cerulean city
You have to get the TM fly and fly back there. Once you have went from pewter to cerulean city, there is no going back, sorry. OH Wow All who played this SUCK and DUMB
in kanto, east of pewter city and west of cerulean
go through Mt. Moon. its left of Pewter city
pizza
You have to go through the Mt. Moon, which is a cave located east of Pewter City.
you cantYou can't get to Mt. Moon from Cerulean City in HG/SS, you have to go through Diglett's Cave and head east from Pewter City.
You don't, you need to go to the power plant and get the generator part from cerulean city, then the power will work and u get the radio card from lavender town, use that to wake the snorlax in vermilion city then go through the digglet tunnel to get to pewter city