Instructions
Walk south from the Cerulean City gym after your successful gym battle.
Stop in at the Bike Shop in the southwest corner of Cerulean City to receive a bicycle. The bicycle enables you to travel faster.
Walk or ride the bicycle south from the Bike Shop to find Route 5 that leads to Saffron City.
Walk or bicycle west from Saffron City along Route 7 to arrive in Celadon City.