A Marathon Rivalry!
On the way to the next contest, Ash and friends meet a trainer who is training for a competition known as the Pokéathlon. Interested in what it is, they decide to go check it out. Ash then decide to enter the competition.
Aired 21/01/2010EP 160 - A Marathon Rivalry!
2006
Pokémon the Series: Diamond and Pearl
After defeating Brandon and declining the offer to be a Frontier Brain, Ash sets off to travel through the far away land of Sinnoh. Once he gets there, he meets up with Hikari, a local trainer from the region, and they decide to travel together.