This is the Cycling Road. You need to have a bike to go through.
Go, Koffing!
Koffing is level 29!

We like poison pokemon because we think they're rad!
Show this kid, Grimer!
Grimer is level 26!

Poison pokemon are the best!
Muk, go!
Muk is level 34!

Do you like my brand new motorcycle!
Golem, go!
Golem is level 30!