first of all there is no route 25 in the johto reigon second you can get a thunderstone at a certain day at the pokealathon dome with athle points it may cost..... 2,500 athele points.
Johto : National Park,route 38 kanto : Route 25
- Johto- national park (come in first in bug catching contest) - route 38 -kanto: route 25 (show bill's grand father a pichu) jhoto-pokeathon dome ways to get a thunderstone
route 25
at the end of route 25
route 25
Misty is somewhere on Route 25.
The Thunderstone is worthless, as the only Pokemon that can evolve using it is Pikachu, which can only be obtained in Kanto. However, you can get a Thunderstone on Route 25, if you want a Raichu.you could Buy it at Celdon Dept. Store. or you can beat lass Dana on route 38 but make sure you register her so that she should call you saying for you to meet her and she will give you a thunderstone
get an eevee and evolve it into a thunderstone
after you beat the elite four, it will be on route 25.
Win the pokeathlon afew time then use the points to buy a thunderstone from the prize corner
You can get it at the pokeathlon wither points :)
He is on route 25 near bill's house