Pokémon Red and Blue/Route 5-6

'After your visit with Bill, return to Cerulean City and go to the house in the northeast corner. Walk through the backyard to find a path leading to Route 5. The road that goes through Saffron City is closed, but you can take the detour along the Underground Path. Stop off at the Pokémon Daycare before you head underground.'

The blocked path
You'll need to jump down the rocks from Cerulean City if you want to get to the Day Care Center, where you can drop off Pokémon to be leveled-up while you walk (they gain EXP at the rate of 1 point for each step you take). Unfortunately, the head of the Center makes all the decisions, so if your Pokémon is full up on skills, he may delete a skill you like or abandon the new one altogether, so be cautious. But if you bought that, dump him here and return later for a. You will be charged 100 for each level gained, though.

The path beyond the lowest building along Route #5 is closed, so you'll have to take the tunnel. Access the tunnel through the building along the right side of the route. Press the A button rapidly as you walk to pick up some randomly placed items (nothing too exciting). At the Route #5 entrance, a woman will offer to trade you a male Nidoran for a female in Blue or Red, or a for a  in Yellow. Not a great deal either way. You may not have the Pokémon that he wants, but not to worry. No matter how long it takes you to find the proper Pokémon, this fellow will wait patiently.

There are lots of powerful trainers on the other side, but you can avoid them all except for the final couple.



On to Vermillion City
The Undergroung Path runs south, tunneling beneath Saffron City and emerging at the north end of Route #6. Though the entrance on this side of Safron City is also blocked with another thirsty guard, for now you should head south to Vermilion City. The way is packed with wild Pokémon and trainers all ready to challenge your Pokémon to a good battle.