Catch a rhyhorn then give it a lucky egg and then trade it to a friend and let them train it it will be rhydon before you know it. Other option: Take the shadow rhydon from Pokemon xd gale of darkness.
Never mind, I'll ask again... Well the best way in Pokemon platinum if u want a strong Rhydon is to look inside the cave before the Pokemon league.
The easiest way to get a Rhydon is by Pokemon XD Gale of Darkness nd in there is a Shadow Rhydon in the game and after purifying it you can trade it to Ruby, Sapphire, FireRed, LeafGreen or Emerald and then if you want you can migrate it to Diamond, Pearl or Platinum.
Rhydon, in Pokemon FR/LG, does not evolve.
Rhydon cannot evolve in Pokemon Silver/Gold/Crystal.
No, the only way to get a rhyperior is to trade a rhydon holding a protector. Rhydon can be found on Diamond on routes 227 & 228, as well as stark mountain.
easiest way to train your Pokemon is by batteling each trainers or you can practice with wild Pokemon in the grass,cave,or sea
Rhydon evolves when the "Protector" is held and the Pokemon is traded.
Trade your rhydon while it is holding a "protecter".
Rhydon
You can get rhydon by doing the Pokemon rangers shadows of alima *2* "Get The Red Gem!" quest hope this helps!
Rhydon is not able to evolve in FireRed.
..........level rhyhorn to 42.....get a rhyhorn from safari and evolve it to rhydon