Receive from The Hiker who comes out of Mt. Mortar on Route 42.
first off, strength is an hm.
Go to Mt. Mortor.
As soon as you enter Mahogany Town, a man will give you Strength
go directly right out of ecruteak city :)
You get it at Route 42 at Mt. Mortar
You get strength t Route 42 from a Hiker.
First, you have to get the HM strength, then teach it to and a Pokemon and you can move boulders.
A Hiker on Route 42 will give you HM04 (strength)
You get Strength in Olivine City in the restraunt next to the Pokemon center. A sailor inside will give it to you.
Go into Mt. Mortar and you will run into a Hiker. He says don't cry and he gives you HM Strength
They need HM 04 Strength Surf and waterfall
Go right of ecruteak. Go twords tge cave and a man will come out of the cave. He gives you strength.