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Speed runner glitches of Pokémon Red and Blue and Pokémon Yellow

This glitch allows players to gain access to Cycling Road without a Bicycle.

Procedure

One should go to Celadon City and travel towards Cycling Road. He or she must not have a Bicycle.
Travel to the northern most point possible and start walking towards the left exit.
When the guard starts talking to the player, he or she should keep pressing B. Doing this will allow the player to get past him and onto the road.
When the player exits, he or she will find that he/she is on a Bicycle, regardless of whether or not the Bicycle is in the player's item pack. This is because the game assumes that the player has a Bicycle if he or she was able to get past the guard.